Directory of Researchers

MIKI Tomohiro
Graduate School of Engineering / Department of Civil Engineering
Associate Professor
Civil Engineering / Architecutre and planning / Building Engineering
Last Updated :2022/10/04

Researcher Profile and Settings

Affiliation

  • <Faculty / Graduate School / Others>

    Graduate School of Engineering / Department of Civil Engineering
  • <Related Faculty / Graduate School / Others>

    Faculty of Engineering / Department of Civil Engineering

Teaching

Research Activities

Research Interests

  • Design of Resilient Structures
  • Precast Concrete
  • Prestressed Concrete
  • Seismic Performance-Based Design
  • Fracture Mechanics of Concrete
  • Image Analysis
  • Nonlinear Analysis
  • Structural Concrete

Research Areas

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Structural and seismic engineering

Awards

  • Jun. 2015 Japan Concrete Institute Kinki Chapter, 日本コンクリート工学会近畿支部(奨励賞), アルカリシリカ反応によりひび割れが生じたコンクリートの圧縮破壊挙動に関する研究

    MIKI Tomohiro

    Japan society

  • Oct. 2013 Japan Prestressed Concrete Institute, 第22回プレストレストコンクリートの発展に関するシンポジウム優秀講演賞, 小型加力装置によるコンクリートに作用する圧縮応力の測定に関する実験研究

    MIKI Tomohiro

    Japan society

  • Oct. 2009 日本材料学会, 第9回コンクリート構造物の補修、補強、アップグレードシンポジウム優秀論文賞, 局所的に鉄筋腐食したRCはりのせん断耐荷機構に関する実験的研究

    MIKI Tomohiro

  • May 2009 日本コンクリート工学協会, 日本コンクリート工学協会賞(論文賞), 鉄筋腐食したRCはりのせん断耐荷機構に関する解析的研究

    MIKI Tomohiro

  • May 2003 日本コンクリート工学協会, 日本コンクリート工学協会賞(奨励賞), 格子モデルによる鉄筋コンクリート構造物の非線形解析

    MIKI Tomohiro

  • May 2003 土木学会, 吉田研究奨励賞, 3次元動的格子モデルによる地震力を受ける鉄筋コンクリート構造物の非線形解析

    MIKI Tomohiro

  • Jul. 2002 日本コンクリート工学協会, 年次論文奨励賞, 鉄筋座屈を考慮した格子モデルによるRC橋脚の静的正負交番解析

    MIKI Tomohiro

  • Jul. 2000 日本コンクリート工学協会, 講演会優秀講演賞, コンクリート構造物の局所的圧縮破壊に関する解析的研究

    MIKI Tomohiro

Published Papers

  • Fundamental Study for Influence of Concrete Damage Due to Alkali-Silica Reaction on Shear Resisting Mechanism of Reinforced Concrete Beams

    Tomohiro Miki, Tomohiro Arakawa

    Jul. 2021, Proceedings of the Japan Concrete Institute, 43 (2), 397 - 402, Japanese

    [Refereed]

    Scientific journal

  • Analytical Study on Seismic Performance of Precast-Prestressed Concrete Columns with Various Connection Conditions

    Hiroya Hattori, Tomohiro Miki, Ami Ikuta

    Last, Jul. 2021, コンクリート工学年次論文集, 43 (2), 253 - 258, Japanese

    [Refereed]

    Scientific journal

  • Comparisons of Seismic Performance and Damage Conditions of Precast Prestressed Concrete Columns with Different Configurations of Joint

    Ami Ikuta, Tomohiro Miki

    Last, Jan. 2021, Proceedings of 23rd Symposium on Seismic Design for Bridges and Structures, 23, 69 - 74, Japanese

    Symposium

  • Fundamental Study on Efficiency Analysis for Classification of Digital Photographs in Concrete Bridges Inspection by means of Machine Learning

    Tomohiro Miki, Sota Sasawaki

    Lead, Nov. 2020, Memoirs of Construction Engineering Research Institute Report, 62, 15 - 24, Japanese

    [Refereed]

    Scientific journal

  • Influence of Configuration of Joint on the Damage Conditions of Precast Prestressed Concrete Columns Subjected to Reversed Cyclic Loading

    IKUTA Ami, MIKI Tomohiro

    Last, Oct. 2020, Proceedings of the 29th Symposium on Developments in Prestressed Concrete, 29, 65 - 70, Japanese

    [Refereed]

    Scientific journal

  • Study on Low-Cycle Fatigue Properties under Compression for Concrete Damaged by Alkali-Silica Reaction based on Cyclic Compression Test in Submerged Condition

    MIKI Tomohiro, NISHIKAWA Yasumasa

    Lead, Jul. 2020, Proceedings of the Japan Concrete Institute, 42 (2), 103 - 108, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Influence of Joint Conditions on Seismic Performance of PCaPC Columns Subjected to Reversed Cyclic Loads

    IKUTA Ami, MIKI Tomohiro

    Last, Jul. 2020, Proceedings of the Japan Concrete Institute, 42 (2), 433 - 438, Japanese

    [Refereed]

    Scientific journal

  • Influence of Joint on the Damage of Precast Prestressed Concrete Columns Subjected to Reversed Cyclic Loading

    IKUTA Ami, MIKI Tomohiro

    Last, Nov. 2019, Proceedings of the 28th Symposium on Developments in Prestressed Concrete, 28, 365 - 370, Japanese

    [Refereed]

    Scientific journal

  • Investigations on Mechanical Properties of Concreate Damaged by Alkali-Silica Reaction Based on Compression Fatigue Tests in Submerged Condition

    NISHIKAWA Yasumasa, MIKI Tomohiro

    Oct. 2019, Proceedings of the Concrete Structure Scenarios, 19, 43 - 46, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on the Visualization of Damege for Precast Prestressed Concrete Columns under Reversed Cyclic Loading based on igital Image Analysis

    IKUTA Ami, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2019, Proceedings of the Japan Concrete Institute, 41 (2), 523 - 528, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Shear Resisting Mechanism of RC Deep Beams with Corroded Longitudinal Reinforcement

    TANAKA Atsushi, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2019, Proceedings of the Japan Concrete Institute, 41 (2), 667 - 672, Japanese

    [Refereed]

    Scientific journal

  • Shear Carrying Capacity of Reinforced Concrete Beams with Various a/d Ratios damaged due to the Alkali-Silica Reaction

    MIKI Tomohiro, ARAKAWA Tomohiro, KOSHIBA Yohei

    IA-FraMCoS, Jun. 2019, Proceedings of 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-10), 10 (B), 1 - 9, English

    [Refereed]

    International conference proceedings

  • KOSAKA Takashi, KANAJI Hidesada, ICHINOMIYA Toshimichi, FUJISHIRO Masaru, MIKI Tomohiro

    Japan Society of Civil Engineers, Dec. 2018, Journal of JSCE A1 (Structural Engineering & Earthquake Engineering), 74 (3), 491 - 503, Japanese

    [Refereed]

    Scientific journal

  • KOSAKA Takashi, KANAJI Hidesada, ICHINOMIYA Toshimichi, FUJISHIRO Masaru, MIKI Tomohiro

    Japan Society of Civil Engineers, Dec. 2018, Journal of JSCE A1 (Structural Engineering & Earthquake Engineering), 74 (3), 473 - 490, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Low-Cycle Compressive Behavior of Concrete Damaged due to Alkali-silica Reaction with Various Water Contents

    NISHIKAWA Yasumasa, MIKI Tomohiro

    The Society of Materials Science, Japan, Oct. 2018, Proceedings of the Concrete Structure Scenarios, 18, 81 - 86, Japanese

    [Refereed]

    Scientific journal

  • High Speed Measurement and Image Analysis for Compressive Failure Behavior of Ultra-High Strength Fiber Reinforced Concrete (UFC)

    MIKI Tomohiro, WATANABE Daiki, KONO Katsuya

    Construction Engineering Research Institute, Nov. 2017, Memoirs of Construction Engineering Research Institute Report, 59, 11 - 18, Japanese

    [Refereed]

    Scientific journal

  • Compressive Failure Mechanism of Ultra-High Strength Fiber Reinforced Concrete by using High Speed Camera

    WATANABE Daiki, MIKI Tomohiro, KONO Katsuya

    Japan Concrete Institute, Jul. 2017, Proceedings of the Japan Concrete Institute, 39 (2), 433 - 438, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Surface Strain Measurement under Compressive Stress for Cracked Concrete by Alkali-Silica Reaction

    HOSHINO Shotaro, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2017, Proceedings of the Japan Concrete Institute, 39 (2), 91 - 96, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Shear Capacity of High Strength Fiber Reinforced Concrete Beams

    MIKI Tomohiro, KITA Kosuke, KONO Katsuya

    RILEM, Sep. 2016, Proceedings of 9th RILEM International Symposium on Fiber Reinforced Concrete, 9, 1 - 8, English

    [Refereed]

    International conference proceedings

  • Cumulative Seismic Damage Assessment in Circular RC Columns using Multi-Directional Polygonal 3D Lattice Model

    SIMAO Mauro Ricardo, MIKI Tomohiro

    fib, Aug. 2016, Proceedings of 11th fib International PhD Symposium in Civil Engineering, 11, 517 - 524, English

    [Refereed]

    International conference proceedings

  • MIKI Tomohiro, TSUKAHARA Hiroki

    IA-FraMCoS, Jun. 2016, Proceedings of 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-9), 9, 1 - 7, English

    [Refereed]

    International conference proceedings

  • Damage Evaluation of RC Columns Subjected to Seismic Loading by Energy Dissipation Using 3D Lattice Model

    SIMAO Mauro Ricardo, MIKI Tomohiro

    This study is aimed at the application of the 3D lattice model, which based on discretization of concrete in truss and arch analogy is able to express the shear resisting mechanism of RC structures in order to perform damage range evaluation of RC columns. Nonlinear dynamic analysis is performed using the new multi-directional 3D lattice model for circular cross section columns

    CRC Press, Oct. 2015, Proceedings of 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2015), 4, 983 - 991, English

    [Refereed]

    International conference proceedings

  • Experimental Study on Tension Softening Properties of Concrete with Micro Cracks Due to Alkali-Silica Reaction

    TSUKAHARA Hiroki, MIKI Tomohiro

    コンクリートの引張軟化特性は,コンクリートの破壊特性を評価する際の重要な情報のひとつである.本論文では,アルカリシリカ反応(ASR)が進行し,その結果ひび割れが生じているコンクリートの引張軟化曲線と破壊エネルギーを求め,ASRに起因するひび割れと破壊挙動との関係を明らかにすることを目的とした.切欠きを有するコンクリートはり供試体を用いて3点曲げ試験を行い,荷重,変位,開口変位を求めた.載荷中にデジタルカメラとマイクロスコープを用いて供試体表面の撮影を行い,撮影画像からデジタル画像相関法を用いて表面ひずみを計測した.本実験より,ASRに起因するひび割れを有するコンクリートの引張軟化特性を評価することができた.

    The Society of Materials Science, Japan, Oct. 2015, Proceedings of the Concrete Structure Scenarios, 15, 523 - 528, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study for Influence of Internal Cracks of Concrete Affected by Alkali-Silica Reaction on Its Compressive Strength

    HOSHINO Shotaro, MIKI Tomohiro

    ASRによってひび割れが生じたコンクリート角柱供試体を対象として,表面を研磨した断面を観察することによってASRひび割れの内部状況を明らかにするとともに,内部ひび割れの可視化を試みた.また,研磨面のスキャナ画像を積層化して,ひび割れの3次元可視化を行った.ひび割れの3次元的可視化によって,骨材とASRひび割れ進展について,骨材の大小ならびにひび割れ深さによらず進展していくことがわかった.また,3次元可視化を行うことでひび割れの立体的な形状を直感的に理解することができた.圧縮載荷試験では,表面に生じたひび割れと圧縮破壊挙動の関係について検討を行い,圧縮で載荷軸方向のASRひび割れが開口し破壊に至ることが,画像解析によって得られたひずみ分布から確認できた.

    The Society of Materials Science, Japan, Oct. 2015, Proceedings of the Concrete Structure Scenarios, 15, 517 - 522, Japanese

    [Refereed]

    Scientific journal

  • Tension Softening Behavior of ASR Damaged Concrete Detected by Image Analysis

    MIKI Tomohiro, MATSUTANI Koichiro, TSUKAHARA Hiroki

    Aug. 2015, Proceedings of 5th International Conference on Construction Materials (CONMAT'15), 5, 2260 - 2269, English

    [Refereed]

    International conference proceedings

  • Experimental Study on Measurement of Prestressing Force by means of Stress Concentration around a Circular Hole

    MIKI Daichi, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2015, Proceedings of the Japan Concrete Institute, 37 (2), 397 - 402, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Shrinkage in High Strength Fiber Reinforced Concrete Beams with Shear Reinforcement and its Effect on Shear Capacity

    MIKI Tomohiro, KITA Kosuke, KONO Katsuya

    Japan Concrete Institute, Jul. 2015, Proceedings of the Japan Concrete Institute, 37 (2), 571 - 576, Japanese

    [Refereed]

    Scientific journal

  • Influence of Partially Occurred Corrosion in Longitudinal Reinforcement on the Shear Carrying Capacity of Reinforced Concrete Beams with Different Shear Span to Effective Depth Ratios

    TSUJIGAMI Kazuki, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2015, Proceedings of the Japan Concrete Institute, 37 (2), 577 - 582, Japanese

    [Refereed]

    Scientific journal

  • Dynamic Analysis for RC Columns with Circular Cross Section using Multi-Directional Polygonal 3D Lattice Model

    Mauro Ricardo SIMÃO, MIKI Tomohiro

    Japan Concrete Institute, Jul. 2015, Proceedings of the Japan Concrete Institute, 37 (2), 757 - 762, English

    [Refereed]

    Scientific journal

  • Evaluation of Compressive Failure of ASR Damaged Concrete Detected by Image Analysis

    MIKI Tomohiro, MIYAGAWA Yudai, Shotaro Hoshino

    Japan Concrete Institute, Jun. 2015, Proceedings of the International Conference on the Regeneration and Conservation of Concrete Structures, English

    [Refereed]

    International conference proceedings

  • Jeremy D. Bricker, Akihiko Nakayama, Hiroshi Takagi, Jun Mitsui, Tomohiro Miki

    Elsevier, 2015, Handbook of Coastal Disaster Mitigation for Engineers and Planners, 385 - 415, English

    [Refereed]

    In book

  • Experimental Investigation on Shrinkage in High Strength Fiber-Reinforced Concrete and Its Influence on the Shear Capacity of RC Beams Having Shear Reinforcement

    Tomohiro Miki, Kosuke Kita, Katsuya Kono

    The present study includes the experimental investigation on the structural mechanism of reinforced concrete (RC) beams using high strength reactive powder concrete (RPC) and containing high-strength steel short fibers. The steel fiber reinforced high-strength RPC beams was design lightly reinforced with shear reinforcement but to still fail in shear in the loading tests. The parameter was set as shear reinforcement ratio (0, 0.3%, and 0.6%), volume fraction of fiber (0, 1%, and 2%) and volume change due to mainly shrinkage which was controlled by the water dissipation during the curing with drying or sealed sequences until the loading test for the beams. The strains of the concrete and reinforcing bars in the RC beams and the strain in the reference specimen were measured during the curing. In the loading test, an image analysis using a digital image correlation method was carried out in order to detect the micro-and macro-cracks in the RC beams. We have confirmed from the loading experiments that the increase in the shear capacity of the RC beams by containing the shear reinforcement and steel fibers even when the amount of shear reinforcement was set close to the minimum requirement. The interval of the diagonal cracks in the RC beams at the ultimate stage was changed according to the amount of the shear reinforcement and the volume fraction of fiber. In addition, the results of loading tests indicate that the initiation and propagation of a diagonal crack in the RC beams was changed and finally the shear capacity of the beams was influenced by the parameters, especially in the case of high shrinkage condition.

    AMER SOC CIVIL ENGINEERS, 2015, CONCREEP 10: MECHANICS AND PHYSICS OF CREEP, SHRINKAGE, AND DURABILITY OF CONCRETE AND CONCRETE STRUCTURES, 10, 738 - 744, English

    [Refereed]

    International conference proceedings

  • Fundamental Study on Measurement of Internal Stress in the Concrete Based on Stress Concentration Factor

    MIKI Daichi, MIKI Tomohiro

    A method to estimate the residual prestressing force in concrete members is required toevaluate the structural performance of existing prestressed concrete structures. Toword this goal, the stress concentration around the hole in a prestressed concrete specimen was used to evaluate the prestress in the concrete member. As the fundamental investigation, uniaxial compression test

    Japan Prestressed Concrete Institute, Oct. 2014, Proceedings of the 23rd Symposium on Developments in Prestressed Concrete, 23, 435 - 440, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Evaluation for Modulus of Elasticity and Compressive Failure Behavior of Concrete Affected by Alkali-Silica Reaction

    MIKI Tomohiro, MIYAGAWA Yudai

    本研究は,ASRが生じたコンクリートの力学的特性,特に静弾性係数や圧縮破壊挙動とASRひび割れの状態との関係を明らかにすることを目的とした.供試体表面に生じたひび割れの長さ,幅,角度を計測し,それらの値と最大応力度および静弾性係数との関係を調べた.一軸圧縮試験の結果より,静弾性係数には,水平方向や斜め方向といった載荷軸直交方向に近い方向のひび割れが,載荷によって閉じる挙動が影響していることを示した.また,プレピーク領域において繰返し荷重を受けるときのASRひび割れの挙動,ならびにASRが生じたコンクリートが破壊に至る挙動を実験的に把握することができた.

    The Society of Materials Science, Japan, Oct. 2014, Proceedings of the Concrete Structure Scenarios, 14, 45 - 52, Japanese

    [Refereed]

    Scientific journal

  • Study on Compressive Failure of Concrete Cracked due to Alkali-Silica Reaction

    MIKI Tomohiro, MIYAGAWA Yudai

    本研究では,ASRに起因するひび割れを測定し,その結果に基づいてASRが生じたコンクリートの力学的性能を評価することを目的とした。そこで,屋外暴露した角柱供試体を対象として,ひび割れの総延長と面積密度を測定し,ASRひび割れの状態を定量的に整理した。その後同一の供試体を対象として行った圧縮試験では,画像解析を用いて載荷に伴うひび割れの進展を計測した。軸方向のASRひび割れの幅,長さや分布性状によって,載荷に伴うひび割れの開口の様子が異なり,圧縮破壊挙動に影響することを確認した。

    Japan Concrete Institute, Jul. 2014, Journal of the Japan Concrete Institute, 36 (2), 73 - 78, Japanese

    [Refereed]

    Scientific journal

  • Numerical Simulation of Bridge Failure by a Tsunami Flow

    NAKAYAMA Akihiko, BRICKER Jeremy D, MIKI Tomohiro

    2011年の東北地方太平洋沖地震によるコンクリート橋桁の津波による被債状況を再現するため,ラージ・エディー・シミュレーション(LES)法に基づく流れと桁移動のシミュレーションを行った.水面は水深関数を用いる液体のみの単相計算で,接近する津波の流れの状況とそれによる橋桁にかかる力を算定し単純支持された桁の移動の再現を行った.結果は岩手県などで見られた橋桁の被債儒教に近いものとなっている.

    一般社団法人 日本機械学会, Nov. 2013, The Proceedings of The Computational Mechanics Conference, 26 (26), 402-1 - 402-2, Japanese

    Symposium

  • Newly Development for Micro Expansion Jack to Measure the Compressive Stress in Concrete

    MIKI Tomohiro, Nur Izyan Syazwani, binti Julkifli

    Japan Prestressed Concrete Institute, Oct. 2013, Proceedings of the 22nd Symposium on Developments in Prestressed Concrete, 22, 323 - 328, Japanese

    [Refereed]

    Scientific journal

  • Prediction of Initial Motion of a Tsunami-Stricken Bridge Deck by Fluid-Structure Interaction Analysis Based on LES

    NAKAYAMA Akihiko, Jeremy D. Bricker, MIKI Tomohiro

    Japan Society of Civil Engineers, Oct. 2013, Journal of JSCE (B2: Coastal Engineering), 69 (2), I_796 - I_800, Japanese

    [Refereed]

    Scientific journal

  • Observation for Internal Cracks of Concrete Affected by Alkali-Silica Reaction and Its Compressive Failure Behavior

    MIKI Tomohiro, MATSUTANI Koichiro, MIYAGAWA Yudai

    Aug. 2013, Proceedings of International Conference on Sustainable Construction Materials and Technologies, 3, T1 - 6-5, English

    [Refereed]

    International conference proceedings

  • Study on Bond Behavior of Corroded Reinforcing Bars Subjected to Cyclic Loading

    MIKI Tomohiro, SHIOMI Takuya

    鉄筋腐食,繰返し荷重,付着応力,ポストピーク

    Japan Concrete Institute, Jul. 2013, Journal of the Japan Concrete Institute, 35 (2), 601 - 606, Japanese

    [Refereed]

    Scientific journal

  • Study on Tension Softening Behavior of Concrete Cracked Due to Alkali-Silica Reaction

    MATSUTANI Koichiro, MIYAGAWA Yudai, MIKI Tomohiro

    ASR,引張軟化曲線,破壊エネルギー,主ひずみ分布

    Japan Concrete Institute, Jul. 2013, Journal of the Japan Concrete Institute, 35 (2), 91 - 96, Japanese

    [Refereed]

    Scientific journal

  • Study on Bond Property of Corroded Reinforcing Bar Under Cyclic Loading

    MIKI Tomohiro, SHIOMI Takuya

    Tokyo Institute of Technology, Mar. 2013, Proceedings of 10th International Conference on Urban Earthquake Engineering, 10, 641 - 646, English

    International conference proceedings

  • Evaluation of Crack Propagation in ASR Damaged Concrete Based on Image Analysis

    MIKI Tomohiro, MATSUTANI Koichiro, MIYAGAWA Yudai

    IA-FraMCoS (International Association of Fracture Mechanics for Concrete and Concrete Structure), Mar. 2013, Proceedings of 8th Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8), 1787 - 1794, English

    [Refereed]

    International conference proceedings

  • Experimental Study on Bond Behavior Between Corroded Reinforcing Bar and Concrete Subjected to Cyclic Loading

    SHIOMI Takuya, MIKI Tomohiro

    Nov. 2012, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.12, pp.425-430, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Tension Softening Behavior of Concrete Cracked Due to Alkali-Silica Reaction

    MATSUTANI Koichiro, MIKI Tomohiro

    Nov. 2012, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.12, pp.509-514, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Internal Cracks of Concrete Affected by Alkali-Silica Reaction and Its Compressive Failure Behavior

    MIYAGAWA Yudai, MIKI Tomohiro

    Nov. 2012, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.12, pp.503-508, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Accumulation of Residual Crack in the PRC Beams under Repeated Loading of Low Number Cycles

    MIKI Tomohiro, NAKANO Masahiro

    Oct. 2012, Proceedings of the 21st Symposium on Developments in Prestressed Concrete, Vol.21, pp.389-392, Japanese

    [Refereed]

    Scientific journal

  • Evaluation of Tsunami Wave Force Subjected to Simply Supported Concrete Girder Bridges based on Numerical Simulation

    MIKI Tomohiro, NAKAYAMA Akihiko

    Sep. 2012, Journal of Japan Society of Civil Engineers, Ser.A2 (Applied Mechanics), Vol.68, No.2, pp.I_505-I_512, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Bond Behavior between Corroded Reinforcing Bar and Concrete subjected to Cyclic Loading

    MIKI Tomohiro, SHIOMI Takuya

    Mar. 2012, Proceeding of 9th International Conference on Urban Earthquake Engineering and 4th Asia Conference on Earthquake Engineering, pp.741-746, English

    International conference proceedings

  • Experimental Study on Bond Behavior Between Corroded Reinforcing Bar and Concrete Subjected to Cyclic Loading

    SHIOMI Takuya, MIKI Tomohiro

    Oct. 2011, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.11, pp.199-204, Japanese

    [Refereed]

    Scientific journal

  • Fundamental Study on Tension Softening Behavior of Concrete Cracked Due to Alkali-Silica Reaction

    MATSUTANI Koichiro, MIKI Tomohiro

    Oct. 2011, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.11, pp.479-484, Japanese

    [Refereed]

    Scientific journal

  • Evaluation of Shear Resisting Mechanism of Partially Corroded RC Beams

    MIKI Tomohiro, TAKEUCHI Yasuhito

    Mar. 2011, Proceeding of 8th International Conference on Urban Earthquake Engineering and 5th International Conference on Earthquake Engineering, pp.615-620, English

    International conference proceedings

  • Measurement of the Strain Distribution of Concrete Subjected to Localized Compression by Using Image Correlation Method

    MIKI Tomohiro, HAYASHI Daisuke

    建設工学研究所, Nov. 2010, Memoirs of Construction Engineering Research Institute Foundation, Vol.52, pp.53-60 (52), 53 - 60, Japanese

    [Refereed]

    Scientific journal

  • Evaluation for Shear Resisting Mechanism of RC Beams Having Localized Corrosion in Longitudinal Reinforcement

    TAKEUCHI Yasuhito, MIKI Tomohiro

    Oct. 2010, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.10, pp.235-240, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Compressive Failure Features of Concrete Cracked Due to Alkali-Silica Reaction

    MIKI Tomohiro, NISHINO Yasuhiro

    Oct. 2010, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.10, pp.187-192, Japanese

    [Refereed]

    Scientific journal

  • Real-time Image Analyzing System for Loading Tests of Structural Concrete

    WATANABE Ken, HIGASHI Hironori, MIKI Tomohiro, NIWA Junichiro

    Mar. 2010, Doboku Gakkai Ronbunshuu E, JSCE, Vol.66, No.1, pp.94-106, Japanese

    [Refereed]

    Scientific journal

  • Shear Carrying Capacity of RC Beams Having Partially Corroded Longitudinal Reinforcement

    MIKI Tomohiro, TAKEUCHI Yasuhito

    Mar. 2010, Proceeding of 7th International Conference on Urban Earthquake Engineering and 5th International Conference on Earthquake Engineering, CD-ROM, English

    International conference proceedings

  • Study on Shear Resisting Mechanism of RC Beams Having Localized Corrosion Conditions of Longitudinal Reinforcement

    MIKI Tomohiro, TAKEUCHI Yasuhito

    Oct. 2009, Proceedings of the Concrete Structure Scenarios, JSMS, Vol.9, pp.405-410, Japanese

    [Refereed]

    Scientific journal

  • Residual Load Carrying Capacity of RC Beams with Spatially Variability of Corrosion

    MIKI Tomohiro, TAKEUCHI Yasuhito

    Mar. 2009, Proceeding of 6th International Conference on Urban Earthquake Engineering, pp.265-270, English

    International conference proceedings

  • Macroscopic Evaluation on Shear Resisting Mechanism of Corroded Reinforced Concrete Beams

    MIKI Tomohiro, SUZUKI Nobue, NIWA Junichiro

    Sep. 2008, Concrete Research and Technology, Vol.19, No.3, pp.61-70, Japanese

    [Refereed]

    Scientific journal

  • Evaluation of the Local Behavior of High-strength Eco-cement Concrete by Using Image Analysis

    NOMA Yasutaka, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    普通砕石ならびに再生粗骨材を使用し,粗骨材絶対容積が高強度コンクリートの圧縮強度ならびに圧縮ひずみ軟化に及ぼす影響を検討した。その結果,粗骨材種類ならびに粗骨材絶対容積に依存して,異なる圧縮強度ならびに圧縮ひずみ軟化現象を確認した。π型変位計ならびに格子法を用いた画像解析を行うことで,供試体載荷直交変位ならびコンクリート中の粗骨材部,モルタル部における載荷直交方向のひずみが,圧縮強度ならびに圧縮ひずみ軟化に影響を及ぼしていることが明らかとなった。

    日本コンクリート工学協会, Jul. 2008, Journal of JCI, Vol.30,No.3,pp.481-486 (2), 481 - 486, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Diagonal Compression Failure of RC Beams Using High-Strength Concrete

    KOBAYASHI Chikaharu, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    Jul. 2008, Journal of JCI, Vol.30,No.3,pp.625-630, Japanese

    [Refereed]

    Scientific journal

  • Shear Behavior of RC Beams with Locally Corroded Reinforcement

    TSUNODA Masahiko, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    Jul. 2008, Journal of JCI, Vol.30,No.3,pp.1705-1710, Japanese

    [Refereed]

    Scientific journal

  • Prediction of the Failure Mode of RC Beams by Using Image Analysis

    HIGASHI Hironori, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    本研究では,載荷中の供試体の変形を画像解析を用いて計測し,有限要素により算出したひずみの分布を示すことで,視覚的に供試体の変形を捉えるという一連の作業を瞬時に行うことができる,リアルタイム非接触ひずみ計測システム(リアルタイムシステム)を開発した。そして,鉄筋コンクリート(RC)はりの載荷試験を行い,本システムを適用し算出した,RCはり表面に発生したひずみの分布から,ひび割れの特徴,さらに破壊性状の経時的変化を検討した。その結果,このシステムを使用することにより,ひび割れの発生位置および進展を再現できることを確認し,RCはりの破壊性状をリアルタイムに予測できる可能性を示した。

    日本コンクリート工学協会, Jul. 2008, Journal of JCI, Vol.30,No.3,pp.793-798 (3), 793 - 798, Japanese

    [Refereed]

    Scientific journal

  • Mechanism on Shear-Sliding Failure in RC Members with Construction Joints

    NOMIYAMA Yoshihiko, MIKI Tomohiro, NIWA Junichiro, NISHIGAKI Yoshihiko

    本研究では,接合部に貫通鉄筋およびせん断キーを有するRC部材の静的単調2面せん断試験を対象として,接合部に界面要素を用いた3次元有限要素解析を行なった。実験は,せん断キーで破壊を生じさせるため,載荷点を接合部,支点をウェブ上面に設定した。解析結果から,ずれせん断耐力に対するスターラップの貢献分は,ハンチ筋による貢献分と比較してやや高いことがわかった。また,せん断キーは,キー自体が破壊に至るまでウェブ部と床版部の一体性を保つことを,界面要素より得られるずれ変位から確認した。

    日本コンクリート工学協会, Jul. 2008, Journal of JCI, Vol.30,No.3,pp.589-594 (3), 589 - 594, Japanese

    [Refereed]

    Scientific journal

  • The Influence of Segmental Length on the Shear Behavior of Segmental Concrete Members

    SIVALEEPUNTH Chunyakom, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    Mar. 2008, Proceeding of Fifth International Conference on Urban Earthquake Engineering, pp.233-238, English

    International conference proceedings

  • Mechanical Properties of High Strength Concrete with Variance of Coarse Aggregate Quantity

    LIU Yue, MIKI Tomohiro, NOMA Yasutaka, NIWA Junichiro

    Mar. 2008, Cement Science and Concrete Technology, Vol.61, pp.412-419, English

    [Refereed]

    Scientific journal

  • Evaluation on Residual Load Carrying Capacity of Corroded RC Beams by 3D Lattice Model Analysis

    MIKI Tomohiro, NIWA Junichiro

    Mar. 2008, Proceeding of Fifth International Conference on Urban Earthquake Engineering, pp.203-208, English

    International conference proceedings

  • Evaluation of the Local Behavior of Recycled Concrete under Cyclic Loading by Using Image Analysis

    NOMA Yasutaka, WATANABE Ken, MIKI Tomohiro, NIWA Junichiro

    Mar. 2008, Proceeding of Fifth International Conference on Urban Earthquake Engineering, pp.239-244, English

    International conference proceedings

  • TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    The present study is aimed at investigating the shear behavior of reinforced concrete beams with doubly reinforced rectangular cross-section, with and without steel fibers, affected by distributed cracks. The influence of the distributed cracks was mathematically quantified with the help of a crack density parameter. Monotonic loading tests were conducted on the RC beams and their failure indicated a mixed mode between both diagonal tension and diagonal compression failures. Due to the reinforcement layout, the effect of the longitudinal compression reinforcement on the shear carrying capacity should be taken into account. The distributed cracks were shown to have less influence on the peak load of doubly reinforced concrete beams.

    Japan Society of Civil Engineers, Oct. 2007, Doboku Gakkai Ronbunshuu E, Vol.63, No.4, pp.590-607 (4), 590 - 607, English

    [Refereed]

    Scientific journal

  • 3D Lattice Model Analysis of Reinforced Concrete Structural Members with Corrosion-Damaged Steels

    MIKI Tomohiro, KUBO Yohei, NIWA Junichiro

    鉄筋腐食したコンクリート構造部材の残存構造性能を把握するため,3次元格子モデルを用いて解析的に検討した。格子モデルは,トラス要素で構成された簡便な解析モデルである。本研究では,鉄筋腐食の程度を,鉄筋の断面欠損,および主鉄筋とコンクリートの付着劣化として解析に反映させた。解析対象は,建設後約40年経過した桟橋から切り取ったRCはりである。3次元格子モデルに,空間的にばらついた鉄筋腐食による断面欠損率を考慮することによって,鉄筋降伏荷重,最大荷重,および変形性能をおおむね予測できた。

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.1675-1680 (3), 1675 - 1680, Japanese

    [Refereed]

    Scientific journal

  • Experimental Study on Shear-Siding Strength between Upper Slab and Pretensioned Concrete Web

    AMEMIYA Yoshiko, ICHIOKA Takaoki, MIKI Tomohiro, NIWA Junichiro

    プレテンションウエブ橋では,ウエブと床版間に発生するずれせん断力に対して,ずれ止め筋およびコンクリートせん断キーにより耐力を確保する。本研究では,接合部の2面せん断試験を行い,スターラップに加え,ハンチ部の鉄筋をずれ止め筋として考慮した場合の耐力,ウエブの上面および側面にせん断キー設置した場合の耐力,コンクリートの付着力の効果等を検討した。その結果,ハンチ部の鉄筋はせん断耐力の向上や,側面せん断キーと同等の初期剛性向上効果があること,コンクリートの付着力によるずれせん断耐力は比較的大きいことを確認した。

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.505-510 (3), 505 - 510, Japanese

    [Refereed]

    Scientific journal

  • Study on Crack Propagation in Concrete Using Recycled Aggregates

    NOMA Yasutaka, MIKI Tomohiro, NIWA Junichiro

    本研究では,様々な再生骨材を用いたコンクリートの引張応力下におけるひび割れ進展挙動を把握することを試みた。供試体中央に1個の骨材を配置したモデルコンクリート供試体を用いて割裂引張試験を行い,デジタルビデオを用いて供試体中のひび割れ進展挙動を高速撮影した。本手法を用いて,再生骨材の品質,およびモルタル部と骨材の強度差がコンクリートのひび割れ進展挙動に及ぼす影響について調べた。その結果,これらの要因がコンクリートの引張強度に影響すること,ひび割れ進展経路を変化させることを明らかにした。

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.2, pp.397-492 (2), 397 - 402, Japanese

    [Refereed]

    Scientific journal

  • Shear Carrying Capacity of RC Beams with Short Steel Fiber and Stirrups

    KIMURA Toshihide, MIKI Tomohiro, NIWA Junichiro

    せん断補強筋を有する鋼繊維補強RCはりにおける,鋼繊維によるせん断補強効果を評価することを目的に,せん断補強筋比と鋼繊維混入率をパラメータとしてRCはりのせん断載荷試験を行った。鋼繊維のせん断補強効果は,重合せの原理に基づいた修正トラス理論を用いて検討した。実験結果から,せん断補強筋と鋼繊維を併用することで,0.3vo1%程度の低繊維混入率の場合においても鋼繊維によるせん断補強効果が向上すること,また,その際のせん断補強効果のばらつきを抑制することができることを確認した。

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.1417-1422 (3), 1417 - 1422, Japanese

    [Refereed]

    Scientific journal

  • Identification for Localized Compressive Failure Zone of Concrete using Image Analysis

    SAKAMOTO Yoichi, MIKI Tomohiro, NIWA Junichiro

    圧縮力を受けて破壊に至るコンクリート部材において,ポストピーク領域では部材軸に沿ったひずみは一様に分布せず,ある領域に局所化する。その領域は,部材長さによっても異なる。本研究では,画像解析により,コンクリート表面の変形挙動からこの圧縮局所化領域を同定した。コンクリート部材に対し圧縮試験を行い,画像解析手法を用いて,部材寸法およびコンクリートの種類(普通,繊維補強,超高強度繊維補強)が圧縮局所化領域に与える影響について検討した。その結果,全ての部材寸法において,圧縮局所化領域は繊維補強コンクリートが最も大きく,超高強度繊維補強コンクリートが最も小さくなることがわかった。

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.43-48 (3), 43 - 48, Japanese

    [Refereed]

    Scientific journal

  • Predicting the Shear Crack Location in RC Beams with Random Cracks Using the Crack Density Parameter

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.673-678 (3), 673 - 678, English

    [Refereed]

    Scientific journal

  • Evaluation of Shear-Sliding Behavior of RC Members with Construction Joints Using 3D Nonlinear FEA

    NOMIYAMA Yoshihiko, MIKI Tomohiro, NIWA Junichiro, MORI Takuya

    プレキャストウェブと後打ちコンクリートフランジ間の接合方法を検討するために,様々な方法で接合したRC部材の静的単調2面せん断試験を行った。本研究では,この試験で用いた供試体を対象として,接合部に界面要素を用いた3次元非線形有限要素解析による検討を行った。解析結果から,接合部におけるウェブ上面の貫通鉄筋よりもウェブ側面の貫通鉄筋の方がずれせん断耐力に対する貢献分は高いこと,また側面および上面せん断キーを配置することにより,接合部のずれ開始後の一体性を保つことができることを確認した

    日本コンクリート工学協会, Jul. 2007, Proceedings of JCI, Vol.29, No.3, pp.499-504 (3), 499 - 504, Japanese

    [Refereed]

    Scientific journal

  • Steel Fibers as a Tool to Improve Shear Carrying Capacity of RC Beams with Random Cracks

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    Jun. 2007, Proceeding of Fifth International Conference on Concrete under Severe Conditions Environment and Loading (CONSEC'07), Tours, France, Vol.1, pp.777-786, English

    [Refereed]

    International conference proceedings

  • Experimental Study on the Shear Resistance of RC Beams Affected by Map Cracking

    MIKI Tomohiro, TOMA Ionut Ovidiu, NIWA Junichiro

    Jun. 2007, Proceeding of Sixth International Conference on Fracture Mechanics of Concrete Structures (FRAMCOS-6), Catania, Italy, Vol.2, pp.701-708, English

    [Refereed]

    International conference proceedings

  • Parametric Study for Shear Carrying Capacity of Externally Prestressed Concrete Members

    SIVALEEPUNTH Chunyakom, MIKI Tomohiro, NIWA Junichiro

    Mar. 2007, Fourth International Conference on Urban Earthquake Engineering, pp.285-292, English

    International conference proceedings

  • Mechanical Properties of Composite PC Bridges Using UFC Truss

    MURATA Hiroshi, MIKI Tomohiro, NIWA Junichiro

    Mar. 2007, Fourth International Conference on Urban Earthquake Engineering, pp.683-690, English

    International conference proceedings

  • Evaluation on Shear Mechanism of Corroded RC Beams by Lattice Model Analysis Considering Bond Deterioration

    MIKI Tomohiro, NIWA Junichiro

    Mar. 2007, Fourth International Conference on Urban Earthquake Engineering, pp.707-714, English

    International conference proceedings

  • Influence of Random Cracks on the Shear Behavior of Reinforced Concrete Beams Containing Steel Fibers

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    Feb. 2007, Doboku Gakkai Ronbunshuu E, Vol.63, No.1, pp.66-78, English

    [Refereed]

    Scientific journal

  • A Study on Mechanical Properties of Concrete Using Recycled Materials

    NOMA Yasutaka, MIKI Tomohiro, KONO Katsuya, NIWA Junichiro

    Jan. 2007, Doboku Gakkai Ronbunshuu E, Vol.63, No.1, pp.1-13, Japanese

    [Refereed]

    Scientific journal

  • Shear Behavior of Steel Fiber Reinforced Concrete Beams With Random Macrocracking

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    Dec. 2006, Proceedings of the Symposium on Infrastructure Development and the Environment (SIDE 2006) including 5th Regional Symposium on Infrastructure Development (RSID-5), STR-010, pp.1-10, English

    International conference proceedings

  • Analytical Study on the Shear Carrying Capacity of Reinforced Concrete Beams Using Recycled Materials

    NOMA Yasutaka, KONO Katsuya, MIKI Tomohiro, NIWA Junichiro

    Dec. 2006, Proceedings of the Symposium on Infrastructure Development and the Environment (SIDE 2006) including 5th Regional Symposium on Infrastructure Development (RSID-5), MTL-004, pp.1-8, English

    International conference proceedings

  • Research on Weight Reduction of Composite PC Beams Using UFC Web Members

    NIWA Junichiro, MIKI Tomohiro, MURATA Hiroshi, CHIGIRA EISUKE

    Sep. 2006, Proceeding of 2006 Taiwan-Japan Symposium on the Advancement of Earthquake Hazard Mitigation Technology, A01, pp.1-8, English

    International conference proceedings

  • Mechanical Evaluation of Corroded RC Beams by Lattice Model Analysis

    MIKI Tomohiro, NIWA Junichiro

    Sep. 2006, Proceeding of 2006 Taiwan-Japan Symposium on the Advancement of Earthquake Hazard Mitigation Technology, A09, pp.1-8, English

    International conference proceedings

  • Nonlinear Analysis of RC Structures Subjected to Seismic Loads By 3D Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    Aug. 2006, Proceedings of the Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Wind and Earthquake Engineerin, English

    International conference proceedings

  • Influence of Steel Fibers on the Behavior of RC Beams with Random Cracks

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    Aug. 2006, Proceedings of the Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Materials, Experimentation, Ma, English

    International conference proceedings

  • Lattice Model Analysis for Evaluation of Shear Loading Capacity of Damaged RC Beams

    SUZUKI Nobue, MIKI Tomohiro, NIWA Junichiro

    Jul. 2006, Proceedings of JCI, Vol.28, No.2, pp.235-240, Japanese

    [Refereed]

    Scientific journal

  • Influence of Steel Fibers on Mechanical Properties of Reinforced Concrete Beams with Random Cracks

    TOMA Ionut Ovidiu, MIKI Tomohiro, NIWA Junichiro

    日本コンクリート工学協会, Jul. 2006, Proceedings of JCI, Vol.28, No.2, pp.1399-1405 (2), 1399 - 1404, English

    [Refereed]

    Scientific journal

  • Evaluation on Seismic Behavior of Reinforced Concrete Viaducts by 3D Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    地震動は構造物に3次元的に作用するため,個別に求められた構成部材の応答や主軸に対する平面的な応答の重ね合せから得られる全体系の地震時挙動は,実際とは異なる可能性がある。本研究では,RC部材のせん断耐荷機構をシンプルに評価できる3次元格子モデルを用いて,地震力を受けるRC構造物全体系の3次元地震時挙動を評価した。解析対象は,兵庫県南部地震で異なる被害状況が見られたRC高架橋である。本検討によって,柱のせん断破壊,柱基部における鉄筋座屈など,実際の被害を本解析手法により再現できることを示した。

    日本コンクリート工学協会, Jul. 2006, Proceedings of JCI, Vol.28, No.2, pp.937-942 (2), 937 - 942, Japanese

    [Refereed]

    Scientific journal

  • Research on Weight Reduction of Composite PC Beams Using Prestressed UFC Truss

    MURATA Hiroshi, NIWA Junichiro, CHIGIRA EISUKE, MIKI Tomohiro

    Mar. 2006, Proceeding of Third International Conference on Urban Earthquake Engineering, pp.707-712, English

    International conference proceedings

  • Nonlinear Analysis of Reinforced Concrete Viaducts By 3D Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    Mar. 2006, Proceeding of Third International Conference on Urban Earthquake Engineering, pp.355-362, English

    International conference proceedings

  • Applicability of Design Code and Simplified Truss Model for Shear Carrying Capacity of Externally Prestressed Concrete Beams

    SIVALEEPUNTH Chunyakom, NIWA Junichiro, MIKI Tomohiro

    Mar. 2006, Proceeding of Third International Conference on Urban Earthquake Engineering, pp.713-720, English

    International conference proceedings

  • Three-Dimensional Lattice Model Analysis of RC Column Subjected to Seismic Loads

    MIKI Tomohiro, NIWA Junichiro

    Feb. 2006, Finite Element Analysis of Reinforced Concrete Structures, ACI SP-237, pp.241-258, English

    [Refereed]

    Scientific journal

  • Nonlinear Analysis of RC Structures Subjected to Seismic Loads By 3D Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    Sep. 2005, Proceeding of Taiwan-Japan Symposium on Advancement of Urban Earthquake Hazard Mitigation Technology, Jhongli, Taiwan, pp.1-10, English

    International conference proceedings

  • Lattice Model Analysis for RC Structural Members Damaged by Corrosion of Reinforcement

    SUZUKI Nobue, MIKI Tomohiro, NIWA Junichiro

    鉄筋腐食によって劣化したRC部材の耐荷機構を解析的に把握するために,格子モデルを用いた検討を行った。格子モデルは,対象部材をトラス要素に離散化させることによって,簡便かつ明確にRC部材の耐荷機構を評価することのできる解析モデルである。本研究では,鉄筋の腐食による断面欠損に加え,鉄筋とコンクリートの付着劣化を考慮するための接合要素のモデル化を行った。正負交番載荷実験の結果との比較から,格子モデルによって,RCはりの耐荷力,変形性能を良好に予測できることが示された。

    日本コンクリート工学協会, Jun. 2005, Journal of JCI, Vol.27, No.2, pp.67-72 (2), 97 - 102, Japanese

    [Refereed]

    Scientific journal

  • Lattice Model Analysis Considering Cyclic Stress-Strain Relationships of Concrete

    NIWA Junichiro, SUZUKI Nobue, MIKI Tomohiro

    Mar. 2005, Proceeding of Second International Conference on Urban Earthquake Engineering, Tokyo, Japan, pp.167-174, English

    International conference proceedings

  • Nonlinear Analysis of Reinforced Concrete Members by Three-dimensional Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    Nov. 2004, Journal of Materials, Concrete Structures and Pavement, JSCE, No.774/V-65, pp.39-58, Japanese

    [Refereed]

    Scientific journal

  • MIKI Tomohiro, NIWA Junichiro

    This study attempts to expand the application of the conventional 2D lattice model, which can express the shear resisting mechanism of RC structural members, to a 3D analytical model. Use of a 3D lattice model for the simulation of torsional and biaxial responses of RC structural members is presented. The results of static analysis are compared with several sets of experimental results for RC beams/columns subjected to pure torsion or cyclic combined loads of torsion and bending. In addition, the dynamic analysis of RC columns subjected to bilateral seismic loading is carried out. The applicability of 3D lattice model to the response prediction of RC structural members under 3D loading is examined by comparing analytical and experimental results.

    Japan Concrete Institute, Oct. 2004, Journal of Advanced Concrete Technology, JCI, Vol.2, No.3, pp.343-358 (3), 343 - 358, English

    [Refereed]

    Scientific journal

  • 3D Lattice Model Analysis of RC Columns Subjected to Combined Torsion and Shear

    MIKI Tomohiro, SUZUKI Nobue, NIWA Junichiro

    平面応力下においてRC部材の非線形挙動を予測できる2次元格子モデルの,3次元荷重下における適用性を検討するため,交番ねじりと曲げの複合荷重を受ける中空断面RC橋脚を対象とした解析を行った。格子モデルでは,せん断耐荷機構をトラス機構とアーチ機構に分けて考え,さらに適切な材料モデルを組み込んだ要素に離散化しているため,RC部材のせん断挙動を妥当な精度で評価できる。新たに提案した3次元格子モデルによって,中空断面RC橋脚の最大耐荷力,変形性能,履歴挙動,およびねじりと曲げの複合荷重の影響を精度良く予測できることを明らかにした。

    日本コンクリート工学協会, Jul. 2004, Journal of JCI, Vol.26, No.2, pp. 67-72 (2), 67 - 72, Japanese

    [Refereed]

    Scientific journal

  • Nonlinear Analysis of Reinforced Concrete Viaducts Subjected to Seismic Loads Using 3D Lattice Model

    MIKI Tomohiro, NIWA Junichiro

    Mar. 2004, First International Conference on Urban Earthquake Engineering, Yokoyama, Japan, pp.437-444, English

    International conference proceedings

  • 3D Lattice Model Analysis of RC Columns Subjected to Seismic Loads

    MIKI Tomohiro, NIWA Junichiro

    Nov. 2003, Proceedings of Second US-JAPAN Workshop on FEARCS, Maui, U.S.A, pp.1-14, English

    International conference proceedings

  • Nonlinear 3D Analysis of RC Columns Subjected to Seismic loading By the Lattice Model,

    MIKI Tomohiro, NIWA Junichiro

    Aug. 2003, Proceedings of Symposium on Environmental Issues Related to Infrastructure Development, Makati City, Philippines, pp.523-532, English

    International conference proceedings

  • Lattice Model Analysis for Hysteretic Behavior of RC Piers Considering Pull-out of Longitudinal Bars

    MIKI Tomohiro, NIWA Junichiro

    Jun. 2003, Proceedings of JCI, Vol.25, No.2, pp.1183-1188, Japanese

    [Refereed]

    Scientific journal

  • MIKI Tomohiro, NIWA Junichiro, LERTSAMATTIYAKUL Manakan

    The nonlinear earthquake response analysis for RC bridge piers was conducted for the purpose of verifying the validity of the static and dynamic lattice model considering the buckling evaluation of reinforcing bar. The buckling behavior of reinforcing bar is represented by a spatially averaged stress-strain relationship for reinforcing bar in compression. It has been confirmed that the static lattice model analysis considering the buckling can accurately predict the behavior of RC bridge piers. By the dynamic lattice model analysis considering the buckling, it has been found that the post-peak behavior can be captured with an appropriate accuracy as well as the static analysis in which two different types of earthquake motion were used for the verification of seismic performance of RC bridge piers.

    Japan Society of Civil Engineers, May 2003, Journal of Materials, Concrete Structures and Pavement, JSCE, No.732/V-59, pp.225-239 (732), 225 - 239, Japanese

    [Refereed]

    Scientific journal

  • Numerical Evaluation of Seismic Performance of Reinforced Concrete Bridge Piers Using Dynamic Lattice Model

    MIKI Tomohiro, NIWA Junichiro, LERTSAMATTIYAKUL Manakan

    May 2003, Concrete Library International of JSCE, Vol.41, pp.49-64, English

    [Refereed]

    Scientific journal

  • Estimation of Seismic Response for RC Bridge Piers Using Three-Dimensional Dynamic Lattice Model

    MIKI Tomohiro, NIWA Junichiro, OKAMOTO Takahisa

    Apr. 2003, Proceedings of Fourth Regional Symposium on Infrastructure Development in Civil Engineering (RSID4), Bangkok, Thailand, Structural Engineering and Mat, English

    International conference proceedings

  • LERTSAMATTIYAKUL Manakan, NIWA Junichiro, LERTSRISAKULRAT Torsak, MIKI Tomohiro

    It is usually observed that RC deep beams, where the entire member becomes D-region, fail by the localized compressive failure of concrete. In this study, the utilization of the concept on localized compressive failure in formulation of the material model of concrete, based on the parameters such as the localized compressive failure length, Lp, and the compressive fracture energy, GFc, is performed. By incorporating the proposed compressive stress-strain relationship to the 2 simplified analytical models, the lattice model and Mander's truss model, the satisfactory predictions on the shear behavior of RC deep beams with and without transverse reinforcement are obtained.

    Japan Society of Civil Engineers, Feb. 2003, Journal of Materials, Concrete Structures and Pavements, No.725/V-58, pp.333-343 (725), 333 - 343, English

    [Refereed]

    Scientific journal

  • Shear Strength Analysis of RC Deep Beams Incorporating the Concept of Concrete Localized Compressive Failure

    LERTSRISAKULRAT Torsak, NIWA Junichiro, LERTSAMATTIYAKUL Manakan, MIKI Tomohiro

    Oct. 2002, The First fib Congress 2002, Failure Mechanism and Non-line, English

    International conference proceedings

  • Numerical Evaluation on Seismic Performance of Reinforced Concrete Bridge Piers

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    Oct. 2002, The First fib Congress 2002, Seismic Design of Concrete Str, English

    International conference proceedings

  • Estimation for Seismic behavior of RC Bridge Piers Strengthened by CFS

    MIKI Tomohiro, NIWA Junichiro, LERTSAMATTIYAKUL Manakan

    Sep. 2002, Regional Symposium on Construction Materials and Testing, Manila, Philippine, pp.1-9, English

    International conference proceedings

  • Analysis on Cyclic Behavior of RC Bridge Piers Using Lattice Model Considering Buckling

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    繰返し水平力を受ける鉄筋コンクリート橋脚の塑性変形挙動を把握することを目的として,静的格子モデル解析による検討を試みた。静的格子モデルは,対象部材を適切な材料モデルを組み込んだトラス要素に離散化することで,せん断耐荷機構を明確に評価できる簡便な解析モデルである。壁式鉄筋コンクリート橋脚を対象とした,水平一方向静的交番載荷実験の結果と解析結果を比較した結果,軸方向鉄筋の座屈挙動を適切にモデル化することで,最大耐力以降の挙動が把握できることを確認した。

    日本コンクリート工学協会, Jun. 2002, Proceedings of JCI, Vol.24, No.2, pp.979-984 (2), 979 - 984, Japanese

    [Refereed]

    Scientific journal

  • Nonlinear Analysis of RC members with Construction Joints

    喜多 俊介, MIKI Tomohiro, 松尾 真紀, NIWA Junichiro

    PC橋梁の軽量化手法として,ウェブ部材にプレキャストプレテンション部材を用いることが検討されている。その場合,フランジ部の現場打設コンクリートとプレテンション部材間で打継ぎ面が生じることになる。本研究では,打継ぎ面を有するRC部材問の接合方法を3通りに変化させた静的単調2面せん断試験をモデルとして,非線形有限要素解析を行い,打継ぎ面の形状が及ぼす影響について解析的に把握することを試みた。解析は打継ぎ面に界面要素を配置してモデル化し,2次元及び3次元の非線形解析を行った。

    日本コンクリート工学協会, Jun. 2002, Proceedings of JCI, Vol.24, No.2, pp.709-714 (2), 709 - 714, Japanese

    [Refereed]

    Scientific journal

  • RC Deep Beams Analysis Considering Localization in Compression

    LERTSAMATTIYAKUL Manakan, MIKI Tomohiro, NIWA Junichiro

    Jun. 2002, Proceedings of JCI, Vol.24, No.2, pp.943-948 (2), 943 - 948, English

    [Refereed]

    Scientific journal

  • Numerical Evaluation for Seismic Performance of Reinforced Concrete Bridge Piers Using Dynamic Lattice Model

    MIKI Tomohiro, NIWA Junichiro, LERTSAMATTIYAKUL Manakan

    May 2002, Journal of Materials, Concrete Structures and Pavement, JSCE, No.704/V-55, pp.151-161, Japanese

    [Refereed]

    Scientific journal

  • Numerical Evaluation for Flexural Deformation of Reinforced Concrete Columns Subjected to Axial and Flexural Loads Using Lattice Model

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    Feb. 2002, Transactions of the Japan Concrete Institute, Vol.23, pp.231-238, English

    [Refereed]

    Scientific journal

  • Lattice Model Analysis in Shear for D-region in RC Structures

    LERTSAMATTIYAKUL Manakan, MIKI Tomohiro, NIWA Junichiro

    日本コンクリート工学協会, Feb. 2002, Transactions of the Japan Concrete Institute, Vol.23, pp.371-376 (3), 1009 - 1014, English

    [Refereed]

    Scientific journal

  • Numerical Evaluation of Plastic Deformation for Reinforced Concrete Columns Subjected to Axial and Lateral Load using Lattice Model

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    鉄筋コンクリート(RC)部材のせん断耐荷機構を明確かつ簡便に評価できる手法である格子モデルを用いて,軸力と水平力が同時に作用するRC柱部材の塑性変形性能を解析的に評価した。RC柱部材の正負交番載荷実験の結果と繰り返し応力場に拡張された格子モデルによる予測の比較を行った結果,本解析手法により,一定軸力,または変動軸力の作用しているRC柱部材の塑性変形性能の予測が可能であることが明らかになった。

    日本コンクリート工学協会, Jul. 2001, Proceedings of JCI, Vol.23, No.3, pp.199-204 (3), 199 - 204, Japanese

    [Refereed]

    Scientific journal

  • Lattice Model Analysis in Shear for D-region in RC Structures

    LERTSAMATTIYAKUL Manakan, MIKI Tomohiro, NIWA Junichiro

    日本コンクリート工学協会, Jul. 2001, Proceedings of JCI, Vol.23, No.3, pp.1009-1014 (3), 1009 - 1014, English

    [Refereed]

    Scientific journal

  • A Numerical Study on the Localized Compressive Failure of Reinforced Concrete Structures

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro, HAMADA Yuzuru

    Feb. 2001, Transactions of the Japan Concrete Institute, Vol.22, pp.93-98, 93 - 98, English

    [Refereed]

    Scientific journal

  • Localization concepts applied to the analysis of reinforced concrete deep beams

    T Lertsrisakulrat, T Miki, M Matsuo, J Niwa

    A bending test program on the series of RC deep beams with the effective depth, d, of 200, 400 and 600 min has been performed. The transverse reinforcement ratio was varied from 0.0, 0.4 to 0.8 percent. The distribution of the local strains inside specimens, both of concrete and reinforcement, has been measured. The test results confirm the localized compressive failure of concrete in the deep beams. Subsequently, the localized failure volume, V-p, and the fracture energy, GF, of the concrete which locally failed in compression of each beam specimen have been evaluated. Finally, the concepts of localized compressive failure of concrete have been incorporated in the analysis of deep beam using Lattice model and the comparison between the experimental and analytical results has been done.

    A A BALKEMA PUBLISHERS, 2001, FRACTURE MECHANICS OF CONCRETE STRUCTURES, VOLS 1 AND 2, Vol.2, pp.983-990, 983 - 990, English

    [Refereed]

    International conference proceedings

  • Simulation for the shear behavior of RC deep beams considering the localization in compression

    T Miki, M Lertsamattiyakul, J Niwa

    The lattice model is an analytical model for determining the change in the shear resisting mechanism before and after the diagonal cracking Of reinforced concrete members. In this study, the applicability of the lattice model to the D-region, where the strain distribution is significantly nonlinear, and in particular in deep beams, has been illustrated. It is assumed that the fracture energy in compression is constant, and the localization in compression is introduced into the analysis by using the different stress-strain relationship in each compressive member.

    CANADIAN SOCIETY CIVIL ENGINEERING, 2001, 2001 SECOND INTERNATIONAL CONFERENCE ON ENGINEERING MATERIALS, VOL I, Vol.1, pp.327-334, 327 - 334, English

    International conference proceedings

  • Numerical Evaluation of RC Structural Dynamic Response Using Lattice Model

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    Dec. 2000, Third Regional Symposium on Infrastructure Development in Civil Engineering (RSID3), pp.629-634, English

    International conference proceedings

  • Lattice Model Analysis for Size Effect in Shear of RC Deep Beams

    LERTSAMATTIYAKUL Manakan, MIKI Tomohiro, NIWA Junichiro

    Aug. 2000, The Second International Summer Symposium, JSCE, pp.321-324, English

    International conference proceedings

  • Numerical Study on Localization in Compressive Failure of Concrete Structure

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro, HAMADA Yuzuru

    格子モデルは,鉄筋コンクリート部材の斜めひび割れの発生,せん断補強筋の降伏,ウェブコンクリートの破壊までの一連の耐荷機構の変化を表現し,かつマクロ的な耐荷機構モデルの構築に役立つ簡易な解析手法である。本研究では,格子モデルを一般的なはり理論の適用できない,応力分布が一様でない領域(D-領域)に対して適用することを試み,その例としてRCディープビームを取り上げて解析を行った。このとき,コンクリートの圧縮部材に対して,圧縮破壊に要するエネルギーを一定にするように圧縮応力-ひずみ関係を変えることで,局所的な圧縮破壊を表現した。

    日本コンクリート工学協会, Jun. 2000, Proceedings of JCI, Vol.22, No.3, pp.151-156 (3), 151 - 156, Japanese

    [Refereed]

    Scientific journal

  • Localization Effects and Fracture Mechanics of Concrete in Compression

    Lertsrisakulrat T, MIKI Tomohiro, Matsuo M, Niwa J

    日本コンクリート工学協会, Jun. 2000, Proceedings of JCI, Vol.22, No.3, pp.145-150 (3), 145 - 150, English

    [Refereed]

    Scientific journal

  • Yushi Aosaka, Takeshi Yamamoto, Shoji Tsutsui, Tomohiro Miki

    Last, Japan Concrete Institute, 28 Jan. 2022, Journal of Advanced Concrete Technology, 20 (1), 30 - 42, English

    [Refereed]

    Scientific journal

  • Study on Damage Control of PCaPC Columns with Different Joint Conditions

    Ami Ikuta, Tomohiro Miki

    Last, Oct. 2021, Proceedings of the 30th Symposium on Developments in Prestressed Concrete, 30, 664 - 669, Japanese

    [Refereed]

    Scientific journal

  • Influence of Surface Characteristics of CFRP Rebars on Behavior of CFRP Strengthened RC Beams with a Circular Cross Section

    Mamy A. Rabotovao, Tomohiro MIKI

    Last, Jul. 2022, Proceedings of the Japan Concrete Institute, 44 (2), 115 - 120, English

    [Refereed]

    Scientific journal

  • Analytical Study on Seismic Performance of Precast-Prestressed Concrete Columns Considering Bond Property of PC Steel Bar

    Hiroya Hattori, Tomohiro Miki, Ami Ikuta

    Corresponding, Jul. 2022, Proceedings of the Japan Concrete Institute, 44 (2), 637 - 642, Japanese

    [Refereed]

    Scientific journal

  • Jingyuan Li, Tomohiro Miki, Qiuning Yang, Mingjie Mao

    Corresponding, Japan Concrete Institute, 06 Sep. 2022, Journal of Advanced Concrete Technology, 20 (9), 550 - 563, English

    [Refereed]

    Scientific journal

MISC

  • Introduction of Laboratory, Dr. Miki's labo, Department of Civil Eng. Kobe University

    Tomohiro Miki

    Lead, 2020, Prestressed Concrete, 62 (2), 92, Japanese

    Introduction scientific journal

  • Research Interests as Contributions to Society and Personal Seeking

    Tomohiro Miki

    Lead, 2018, Bridge and Foundation Engnieering, 52 (8), 70 - 71, Japanese

    Introduction commerce magazine

  • ACI Fall 2017 Convention in Anaheim

    三木 朋広, 楠 浩一, 睦好 宏史

    Japan Concrete Institute, 2018, Concrete Journal, 56 (7), 608 - 609, Japanese

  • Visiting University of California, San Diego and Precast Concrete

    Miki Tomohiro

    公益社団法人 日本コンクリート工学会, 2017, Concrete Journal, 55 (4), 331 - 332, Japanese

  • 三木 朋広

    公益社団法人 日本コンクリート工学会, 2016, コンクリート工学, 54 (10), 1068 - 1070, Japanese

  • Mechanical Properties and Compressive Failure Image Analysis of Cementitious Material Containing High-volume Steel Fiber

    Katsuya Kono, Tomohiro Miki, Masao Ishida

    太平洋セメント中央研究所, 2011, Taiheiyo Cement Report, (161), 42 - 54, Japanese

  • Current Studies on Evaluation of Shear Carrying Capacity of Lightly Reinforced Concrete Beams

    MIKI T

    日本コンクリート工学協会, 01 Apr. 2008, コンクリート工学 = Concrete journal, 46 (4), 54 - 59, Japanese

  • 第6回コンクリート構造の破壊の力学に関する国際会議(FraMCoS-6)の参加報告

    斉藤 成彦, 三木 朋広, 長谷川 俊昭

    日本コンクリート工学協会, 01 Dec. 2007, コンクリート工学 = Concrete journal, 45 (12), 60 - 62, Japanese

  • 第4回都市地震工学国際会議(2007年3月5日-6日)

    三木 朋広

    日本コンクリート工学協会, 01 Jul. 2007, コンクリート工学 = Concrete journal, 45 (7), 81 - 83, Japanese

  • 米国滞在記 : 2つの街, ボウルダーとサンディエゴ

    三木 朋広

    日本コンクリート工学協会, 01 Apr. 2005, コンクリート工学 = Concrete journal, 43 (4), 62 - 64, Japanese

  • 第5回コンクリート構造の破壊の力学に関する国際会議(FraMCoS-5)に参加して

    三木 朋広, 国枝 稔

    日本コンクリート工学協会, 01 Nov. 2004, コンクリート工学 = Concrete journal, 42 (11), 65 - 67, Japanese

  • US-Japan-Europe Seminar on Simulation of Collapse of Concrete Structures : from Research to Practice, November 2 to 4, 2003, at Maui Prince Hotel in Makena, Maui

    三木 朋広, 寺井 雅和, 斉藤 成彦, 河野 進

    日本コンクリート工学協会, 01 Mar. 2004, コンクリート工学 = Concrete journal, 42 (3), 71 - 74, Japanese

  • Analytical Evaluation of Seismic Performance for Reinforced Concrete Bridge Piers

    MIKI Tomohiro, NIWA Junichiro

    東京工業大学工学部土木工学科, Mar. 2003, Technical Report, Department of Civil Engineering, Tokyo Institute of Technology, 67 (67), 25 - 38, English

    Others

  • コンクリート圧縮強度コンテストに参加して

    松井 孝治, 西田 孝弘, 三木 朋広

    東京工業大学工学部土木工学科, Mar. 2000, 東京工業大学工学部土木工学科研究報告, 61 (61), 93 - 97, Japanese

  • 神戸大学コラム 安心の素

    三木朋広

    20 Sep. 2021, 神戸新聞

    Introduction commerce magazine

  • 委員会報告 性能評価型耐震設計に用いるコンクリート構造物の非線形モデル研究委員会

    塩原等, 中村光*, 楠浩一, 三木朋広, 藤倉修一, 壁谷澤寿一

    Jul. 2022, コンクリート工学年次論文集, 44 (2), 10 - 18, Japanese

    Introduction scientific journal

  • Committee Report JCI-TC183A Technical Committee on Design Concept for Precast and Prestressed Concrete Structural Components including Connections

    Tomohiro MIKI, Yoshinobu OSHIMA, Makoto MARUTA, Masanori TANI, Takashi TAKEUCHI, Hiroshi SAKATA, Kazumasa OKUBO, Yuhiko ICHISAWA, Takeshi OSHIRO

    Lead, Jul. 2021, Proceedings of JCI, 43 (1), 1 - 7, Japanese

    [Refereed][Invited]

    Introduction scientific journal

Books etc

  • Structural Concrete -A Challenge to systematize the knowledge

    二羽淳一郎, 水田真紀, 河野克哉, 三木朋広, 渡辺健, 松本浩嗣, 中村拓郎, 大窪一正, 柳田龍平

    Contributor, 建設図書, Feb. 2021, Japanese, ISBN: 9784874592236

  • コンクリート構造の設計・施工・維持管理の基本(第6次改訂版)

    Design, vice chair, JSCE Kansai, Dec. 2019, Japanese

    Scholarly book

  • コンクリート構造学 第5版

    MIKI Tomohiro

    Joint work, 森北出版, Aug. 2017, Japanese

    Textbook

  • 改訂版 図説 わかる材料 土木・環境・社会基盤施設をつくる

    MIKI Tomohiro

    Joint work, 学芸出版社, Dec. 2015, Japanese, ISBN: 9784761526146

    Scholarly book

  • 図説 わかるコンクリート構造

    井上 晋, 上田 尚史, 内田 慎哉, 武田 字浦, MIKI Tomohiro, 三岩 敬孝

    Joint work, 学芸出版社, Apr. 2015, Japanese, ISBN: 9784761525958

    Textbook

  • コンクリート構造の設計・施工・維持管理の基本(第5次改訂版)

    MIKI Tomohiro

    Joint work, 土木学会関西支部, 2014, Japanese

    Scholarly book

  • 建設材料実験

    MIKI Tomohiro

    Joint work, 日本材料学会, Mar. 2011, Japanese

    Textbook

  • 図説 わかる材料 土木・環境・社会基盤施設をつくる

    MIKI Tomohiro

    Joint work, 学芸出版社, Aug. 2009, Japanese

    Textbook

  • コンクリート構造の設計・施工・維持管理の基本(第4次改訂版)

    MIKI Tomohiro

    Joint work, JSCE Kansai, Mar. 2009, Japanese

    Scholarly book

  • Nonlinear Analysis of Reinforced Concrete Structures Subjected to Seismic Loads by Using Three-dimensional Lattice Model

    MIKI Tomohiro

    Single work, Tokyo Institute of Technology, Mar. 2004, English

    Scholarly book

Presentations

  • Analytical Study on Sesmic Performance of PCaPC Columns Subjected to Reversed Cyclic Loading

    Hiroya Hattori, Tomohiro Miki, Ami Ikuta

    76th Annual Conference of JSCE, 09 Sep. 2021, Japanese

    Oral presentation

  • Influence of Bond Property Between CFRP Bars and Concrete on Overall Behavior of Circular RC Beams Strengthened by CFRP Under Shear

    Rabotovao, A.M., Miki, T

    76th Annual Conference of JSCE, 09 Sep. 2021, English

    Oral presentation

  • Influence of Joint Conditions of reinforcement and PC tendons on Seismic Performance of PCaPC Columns

    Ami Ikuta, Tomohiro Miki

    76th Annual Conference of JSCE, 09 Sep. 2021, Japanese

    Oral presentation

  • Fundamental Study on Tensile and Bond Properties of Polyurea Resin

    Kouta Nishioka, Tomohiro Miki

    2021 Annual Conference of JSCE Kansai Branch, 23 May 2021, Japanese

    Invited oral presentation

  • Discussion for Statistical Classification to Evaluate Damage Degree Based on Image Pictures of the Concrete Bridge Inspection By Means of Machine Learning

    Souta Sasawaki, Tomohiro Miki

    2021 Annual Conference of JSCE Kansai Branch, 23 May 2021, Japanese

    Oral presentation

  • Analysis for Behavior of Joint in PCaPC column Subjected to Reversed Cyclic Loading

    Hiroya Hattori, Tomohiro Miki, Ami Ikuta

    2021 Annual Conference of JSCE Kansai Branch, 23 May 2021, Japanese

    Oral presentation

  • Nonlinear Analysis of Circular Cross-Sectional RC Beams Strengthening by CFRP Under Shear

    Rabotovao, A.M, Miki, T

    2021 Annual Conference of JSCE Kansai Branch, 23 May 2021, English

    Oral presentation

  • Fundamental Study on Classification Efficiency for the Digital Photograph in the Inspection for Concrete Bridges by means of Machine Learning

    SASAWAKI Sota, MIKI Tomohiro

    75th Annual Conference of JSCE, 11 Sep. 2020, Japanese

    Oral presentation

  • Fundamental Study on Size Effect of Shear Strength of RC Deep Beams and RC Short Beams

    MIZUNO Shunpei, MIKI Tomohiro

    75th Annual Conference of JSCE, 09 Sep. 2020, Japanese

    Oral presentation

  • Comparison of Damage on Joint Conditions of Precast Prestressed Concrete Columns under Reversed Cyclic Loading

    IKUTA Ami, MIKI Tomohiro

    75th Annual Conference of JSCE, 09 Sep. 2020, Japanese

    Oral presentation

  • Influence of Joint Conditions on Seismic Performance of Precast Prestressed Concrete Columns

    IKUTA Ami, MIKI Tomohiro

    2020 Annual Conference of JSCE Kansai Branch, 23 May 2020, Japanese

    Oral presentation

  • Measurement on Cracking by means of Image Analysis for Precast and Prestressed Concrete Columns Subjected to Reversed Cyclic Loading

    IKUTA Ami, MIKI Tomohiro

    74th Annual Conference of JSCE, Sep. 2019, Japanese, JSCE, Kagawa University, Domestic conference

    Oral presentation

  • Fundamental Study of Shrinkage Property and Shear Capacity of RC Beams Containing Blast Furnace Slag Fine Powder

    MIKI Tomohiro, EMIYA Ayane, KONO Katsuya, YASUDA Eik, KOGAME Daisuke

    74th Annual Conference of JSCE, Sep. 2019, Japanese, JSCE, Kagawa University, Domestic conference

    Oral presentation

  • Toward a Development of Resilient Structures using Precast and Prestressed Concrete Structural Components

    MIKI Tomohiro

    4th JCI-ACI Joint Seminar, Sustainable and Resilient Concrete Structures -Codes and Practices-, Jul. 2019, English, Japan Concrete Institute, Sapporo Convention Center, International conference

    [Invited]

    Invited oral presentation

  • Study on Shear Capacity of RC Deep Beams having Corroded Longitudinal Reinforcement

    TANAKA Atsushi, MIKI Tomohiro

    2019年度土木学会関西支部年次学術講演会, Jun. 2019, Japanese, JSCE Kansai branch, 大阪大学, Domestic conference

    Oral presentation

  • Study on Damage Evaluation of Precast and Prestressed Concrete Columns Subjected to Reversed Cyclic Loading

    IKUTA Ami, MIKI Tomohiro

    2019年度土木学会関西支部年次学術講演会, Jun. 2019, Japanese, JSCE Kansai branch, 大阪大学, Domestic conference

    Oral presentation

  • Influence of Cracks at Anchorage of Longitudinal reinforcement of RC Beams on the Load Resisting Mechanism

    KAMITANI Taichiro, MIKI Tomohiro

    73rd Annual Conference of JSCE, Aug. 2018, Japanese, JSCE, 北海道大学, Domestic conference

    Oral presentation

  • Crack Propagation in Concrete Damaged due to Alkali-Silica Reaction with Various Water Contents Under Low-Cycle Compressive Loading

    NISHIKAWA Yasumasa, MIKI Tomohiro

    73rd Annual Conference of JSCE, Aug. 2018, Japanese, JSCE, 北海道大学, Domestic conference

    Oral presentation

  • Tension Softening Property of Concrete Damaged due to Alkali-Silica Reaction with Various Water Contents

    KOSHIBA Yohei, MIKI Tomohiro

    73rd Annual Conference of JSCE, Aug. 2018, Japanese, JSCE, 北海道大学, Domestic conference

    Oral presentation

  • Experimental Study on Loading of Reinforced Concrete Deep Beams Having Localized Corrosion Condition of Longitudinal Reinforcement

    TANAKA Atsushi, MIKI Tomohiro

    平成30年度土木学会関西支部年次学術講演会, Jun. 2018, Japanese, JSCE Kansai branch, 神戸大学, Domestic conference

    Oral presentation

  • Study on Mechanical Properties of RC Beams Having Localized Corrosion at Anchorage Zone of Longitudinal Bars

    KAMITANI Taichiro, MIKI Tomohiro

    平成30年度土木学会関西支部年次学術講演会, Jun. 2018, Japanese, JSCE Kansai branch, 神戸大学, Domestic conference

    Oral presentation

  • Effect of Internal moisture on Tension Softening Properties on Concrete Damaged Due to Alkali-Silica Reaction

    KOSHIBA Yohei, MIKI Tomohiro

    平成30年度土木学会関西支部年次学術講演会, Jun. 2018, Japanese, JSCE Kansai branch, 神戸大学, Domestic conference

    Oral presentation

  • Influence of Internal Moisture on Low Cycle Compression Fatigue Property in Concrete with Alkali-Silica Reaction

    NISHIKAWA Yasumasa, MIKI Tomohiro

    平成30年度土木学会関西支部年次学術講演会, Jun. 2018, Japanese, JSCE Kansai branch, 神戸大学, Domestic conference

    Oral presentation

  • Evaluation for Influence of Damage of RC Beams affected by Alkali-Silica Reaction on the Shear Resisting Mechanism

    ARAKAWA Tomohiro, MIKI Tomohiro

    平成30年度土木学会関西支部年次学術講演会, Jun. 2018, Japanese, JSCE Kansai branch, 神戸大学, Domestic conference

    Oral presentation

  • Experimental Study on Shear Carrying Capacity of Reinforced Concrete Deep Beams Having Localized Corrosion Condition of Longitudinal Reinforcement

    TANAKA Atsushi, MIKI Tomohiro

    72nd Annual Conference of JSCE, Sep. 2017, Japanese, JSCE, 九州大学, Domestic conference

    Oral presentation

  • High-Speed Measurement for Compressive Failure Mechanism of Ultra High Strength Cement-Based Material

    WATANABE Daiki, MIKI Tomohiro, KONO Katsuya

    72nd Annual Conference of JSCE, Sep. 2017, Japanese, JSCE, 九州大学, Domestic conference

    Oral presentation

  • Study on bond property of mono fiber in Ultra-high strength fiber reinforced concrete using of shrinkage reducing agent

    EMIYA Ayane, MIKI Tomohiro, KONO Katsuya

    72nd Annual Conference of JSCE, Sep. 2017, Japanese, JSCE, 九州大学, Domestic conference

    Oral presentation

  • Effect of shrinkage of matrix of ultra-high strength fiber reinforced concrete on its bond property of mono fiber

    EMIYA Ayane, MIKI Tomohiro

    平成29年度土木学会関西支部年次学術講演会, Jun. 2017, Japanese, JSCE Kansai branch, 大阪工業大学, Domestic conference

    Oral presentation

  • Experimental Study on Loading of Reinforced Concrete Deep Beams Having Localized Corrosion Condition of Longitudinal Reinforcement

    TANAKA Atsushi, MIKI Tomohiro

    平成29年度土木学会関西支部年次学術講演会, Jun. 2017, Japanese, JSCE Kansai branch, 大阪工業大学, Domestic conference

    Oral presentation

  • 表層研磨したASR劣化コンクリートはり供試体におけるひび割れ進展挙動に関する研究, V-646

    塚原 宏樹, MIKI Tomohiro

    71st Annual Conference of JSCE, Sep. 2016, Japanese, JSCE, 仙台, Domestic conference

    Oral presentation

  • 超高強度繊維補強コンクリートの圧縮破壊挙動に関する高速度画像計測, V-590

    渡邉 大基, MIKI Tomohiro

    71st Annual Conference of JSCE, Sep. 2016, Japanese, JSCE, 仙台, Domestic conference

    Oral presentation

  • 世界最高レベルの圧縮強度を有する 超高強度繊維補強コンクリートの 圧縮破壊挙動の高速度計測, V-19

    渡邉 大基, MIKI Tomohiro

    平成28年度土木学会関西支部年次学術講演会, Jun. 2016, Japanese, JSCE Kansai branch, 草津, Domestic conference

    Oral presentation

  • 部分的に鉄筋腐食したRCはりのせん断耐荷機構の評価に関する解析的研究, No.64

    NAKAMURA Shunya, MIKI Tomohiro

    材料シンポ若手学生発表会, Oct. 2015, Japanese, The Society of Materials Science, Japan, 京都, Domestic conference

    Oral presentation

  • 切欠きはりのリガメント部におけるASRによるひび割れの状態が引張軟化挙動に与える影響, Ⅴ-641

    塚原 宏樹, MIKI Tomohiro

    70th Annual Conference of JSCE, Sep. 2015, Japanese, JSCE, 岡山, Domestic conference

    Oral presentation

  • Seismic Damage Analysis of RC Rigid-Frame Railway Viaduct Using 3D Lattice Model, CS2-035

    Mauro Ricardo Simão, MIKI Tomohiro

    70th Annual Conference of JSCE, Sep. 2015, English, JSCE, 岡山, Domestic conference

    Oral presentation

  • ASRが生じたコンクリートの空間的ひび割れ状態の把握に関する基礎的研究, Ⅴ-015

    星野 翔太郎, MIKI Tomohiro

    70th Annual Conference of JSCE, Sep. 2015, Japanese, JSCE, 岡山, Domestic conference

    Oral presentation

  • せん断補強した高強度繊維補強コンクリートはりのせん断耐力に関する実験的研究

    KITA Kosuke, MIKI Tomohiro

    平成27年度土木学会関西支部年次学術講演会, May 2015, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • アルカリ骨材反応が生じたコンクリートにおける微細ひび割れが引張軟化挙動に与える影響

    TSUKAHARA Hiroki, MIKI Tomohiro

    平成27年度土木学会関西支部年次学術講演会, May 2015, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • アルカリ骨材反応が生じたコンクリートにおける内部ひび割れの可視化に関する基礎的研究

    HOSHINO Shotaro, MIKI Tomohiro

    平成27年度土木学会関西支部年次学術講演会, May 2015, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 骨材の位置や分布を考慮したコンクリートの内部応力の推定に関する解析的検討, Ⅴ-265

    NAKAMURA Shunya, MIKI Tomohiro

    69th Annual Conference of JSCE, Sep. 2014, Japanese, JSCE, 大阪, Domestic conference

    Oral presentation

  • 円孔周辺の応力集中係数を用いたプレストレス力の推定に関する基礎的研究, Ⅴ-282

    MIKI Daichi, MIKI Tomohiro

    69th Annual Conference of JSCE, Sep. 2014, Japanese, JSCE, 大阪, Domestic conference

    Oral presentation

  • Seismic Damage Range Evaluation of RC Columns with Circular Cross Section by Energy Dissipation Using 3D Lattice Model, CS2-055

    SIMAO Mauro Ricardo, MIKI Tomohiro

    69th Annual Conference of JSCE, Sep. 2014, Japanese, JSCE, 大阪, Domestic conference

    Oral presentation

  • 骨材の影響を考慮したコンクリートの内部応力に関する解析的検討, Ⅴ-15

    NAKAMURA Shunya, MIKI Tomohiro

    平成26年度土木学会関西支部年次学術講演会, May 2014, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 形状の異なる超高強度モルタルはりの引張破壊特性に関する基礎的研究, Ⅴ-14

    MIKI Tomohiro, 浦井麻佑

    平成26年度土木学会関西支部年次学術講演会, May 2014, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 円孔周辺の応力集中係数を用いたコンクリートの内部応力の推定に関する基礎的研究, Ⅴ-13

    MIKI Daichi, MIKI Tomohiro

    平成26年度土木学会関西支部年次学術講演会, May 2014, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 小型加力装置によるコンクリートに作用する圧縮応力の測定に関する基礎的研究

    MIKI Tomohiro, Nur Izyan Syazwani, binti Julkifli

    68th Annual Conference of JSCE, Sep. 2013, Japanese, JSCE, 千葉, Domestic conference

    Oral presentation

  • 画像相関法によるコンクリートの破壊進展領域の測定に関する実験的研究

    SHIBATA Yusuke, MIKI Tomohiro

    68th Annual Conference of JSCE, Sep. 2013, Japanese, JSCE, 千葉, Domestic conference

    Oral presentation

  • Seismic Damage Evaluation of RC Structurel Members Using 3D Lattice Model

    SIMAO Mauro Ricardo, MIKI Tomohiro

    68th Annual Conference of JSCE, Sep. 2013, English, JSCE, 千葉, Domestic conference

    Oral presentation

  • 小型円筒形ジャッキを用いたコンクリート応力の推定に関する基礎的研究,V-12

    MIKI Tomohiro, Nur Izyan Syazwani, binti Julkifli

    平成25年度土木学会関西支部年次学術講演会, Jun. 2013, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 画像相関法を用いたコンクリートの破壊進展領域の評価に関する基礎的研究,V-32

    SHIBATA Yusuke, MIKI Tomohiro

    平成25年度土木学会関西支部年次学術講演会, Jun. 2013, Japanese, JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 超高強度繊維補強コンクリートの内部および表面の収縮特性に関する実験的研究, V-490, pp.979-980

    IKUTA Ami, MIKI Tomohiro, KONO Katsuya

    67th Annual Conference of JSCE, Sep. 2012, Japanese, 土木学会/JSCE, 名古屋, Domestic conference

    Oral presentation

  • 杭支持された橋脚フーチングにおける非線形解析の再現性の検討, V-250, pp.499-500

    IIDA Chisato, MIKI Tomohiro

    67th Annual Conference of JSCE, Sep. 2012, Japanese, 土木学会/JSCE, 名古屋, Domestic conference

    Oral presentation

  • PRCはりの低サイクル時における残留ひび割れの蓄積に関する基礎的研究, V-612, pp.1223-1224

    NAKANO Masahiro, MIKI Tomohiro

    67th Annual Conference of JSCE, Sep. 2012, Japanese, 土木学会/JSCE, 名古屋, Domestic conference

    Oral presentation

  • ASR劣化したコンクリートの圧縮破壊挙動に関する実験的研究, V-169, pp.337-338

    MIYAGAWA Yudai, MIKI Tomohiro

    67th Annual Conference of JSCE, Sep. 2012, Japanese, 土木学会/JSCE, 名古屋, Domestic conference

    Oral presentation

  • 非線形解析による杭支持された橋脚フーチングの耐荷力評価に関する基礎的研究, V-7

    IIDA Chisato, MIKI Tomohiro

    平成24年度土木学会関西支部年次学術講演会, Jun. 2012, Japanese, 土木学会関西支部/JSCE Kansai branch, 神戸, Domestic conference

    Oral presentation

  • 低プレストレス力を導入したPRCはりにおける曲げひび割れ進展挙動に関する基礎的研究, V-18

    NAKANO Masahiro, MIKI Tomohiro

    平成24年度土木学会関西支部年次学術講演会, Jun. 2012, Japanese, 土木学会関西支部/JSCE Kansai branch, 神戸, Domestic conference

    Oral presentation

  • アルカリ骨材反応が生じたコンクリートの圧縮破壊挙動に関する実験的研究, V-33

    MIYAGAWA Yudai, MIKI Tomohiro

    平成24年度土木学会関西支部年次学術講演会, Jun. 2012, Japanese, 土木学会関西支部/JSCE Kansai branch, 神戸, Domestic conference

    Oral presentation

  • 腐食した鉄筋とコンクリート間の繰返し荷重下における付着挙動に関する実験的研究, V-139, pp.277-278

    SHIOMI Takuya, MIKI Tomohiro

    66th Annual Conference of JSCE, Sep. 2011, Japanese, 土木学会/JSCE, 愛媛, Domestic conference

    Oral presentation

  • 多量繊維補強コンクリート(HVFC)の圧縮破壊挙動評価, V-212, pp.423-424

    ITO Tsukasa, MIKI Tomohiro

    66th Annual Conference of JSCE, Sep. 2011, Japanese, 土木学会/JSCE, 愛媛, Domestic conference

    Oral presentation

  • アルカリ骨材反応によりひび割れが生じたコンクリートの引張軟化挙動に関する実験的研究, V-551, pp.1101-1102

    MATSUTANI Koichiro, MIKI Tomohiro

    66th Annual Conference of JSCE, Sep. 2011, Japanese, 土木学会/JSCE, 愛媛, Domestic conference

    Oral presentation

  • 3次元非線形有限要素を用いた橋脚のせん断耐力照査例, I-327, pp.653-654

    平塚 和身, 岡重 嘉泰, 室屋 信彦, MIKI Tomohiro

    66th Annual Conference of JSCE, Sep. 2011, Japanese, 土木学会/JSCE, 愛媛, Domestic conference

    Oral presentation

  • 多量繊維補強したセメント系材料の圧縮破壊挙動評価, V-17

    ITO Tsukasa, MIKI Tomohiro

    平成23年度土木学会関西支部年次学術講演会, Jun. 2011, Japanese, 土木学会関西支部/JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 軸方向鉄筋に局所的腐食を有するRCはりのせん断耐荷機構評価に関する実験的研究, V-25

    TAKEUCHI Yasuhito, MIKI Tomohiro

    平成23年度土木学会関西支部年次学術講演会, Jun. 2011, Japanese, 土木学会関西支部/JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 繰返し荷重下における鉄筋腐食とコンクリート間の付着特性に関する基礎的研究, V-25

    SHIOMI Takuya, MIKI Tomohiro

    平成23年度土木学会関西支部年次学術講演会, Jun. 2011, Japanese, 土木学会関西支部/JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • アルカリ骨材反応が生じたコンクリートの引張軟化挙動に関する実験的研究, V-5

    MATSUTANI Koichiro, MIKI Tomohiro

    平成23年度土木学会関西支部年次学術講演会, Jun. 2011, Japanese, 土木学会関西支部/JSCE Kansai branch, 大阪, Domestic conference

    Oral presentation

  • 局所的鉄筋腐食を有するRCはりのせん断耐荷機構に関する実験的研究, V-079, pp.157-158

    TAKEUCHI Yasuhito, MIKI Tomohiro

    65th Annual Conference of JSCE, Sep. 2010, Japanese, 土木学会/JSCE, 札幌, Domestic conference

    Oral presentation

  • デジタル画像相関法による局所的圧縮力を受けるコンクリートの非接触ひずみ計測, V-545, pp.1089-1090

    MIKI Tomohiro, HAYASHI Daisuke

    65th Annual Conference of JSCE, Sep. 2010, Japanese, 土木学会/JSCE, 札幌, Domestic conference

    Oral presentation

  • 定着部の腐食ひび割れがRC はりの破壊性状に与える影響に関する研究, V-39

    MATSUDA Satoko, MIKI Tomohiro

    平成22年度土木学会関西支部年次学術講演会, May 2010, Japanese, 土木学会関西支部/JSCE Kansai branch, 京都, Domestic conference

    Oral presentation

  • 局所的鉄筋腐食を有するRCはりのせん断耐荷機構評価に関する実験的研究, V-40

    TAKEUCHI Yasuhito, MIKI Tomohiro

    平成22年度土木学会関西支部年次学術講演会, May 2010, Japanese, 土木学会関西支部/JSCE Kansai branch, 京都, Domestic conference

    Oral presentation

  • 画像相関法を用いた局所的圧縮力を受けるコンクリートのひずみ計測, V-6

    MIKI Tomohiro, HAYASHI Daisuke

    平成22年度土木学会関西支部年次学術講演会, May 2010, Japanese, 土木学会関西支部/JSCE Kansai branch, 京都, Domestic conference

    Oral presentation

  • アルカリ骨材反応が生じたコンクリートの圧縮破壊挙動に関する基礎的研究, V-42

    NISHINO Yasuhiro, MIKI Tomohiro

    平成22年度土木学会関西支部年次学術講演会, May 2010, Japanese, 土木学会関西支部/JSCE Kansai branch, 京都, Domestic conference

    Oral presentation

  • LED ターゲットを用いた画像解析によるコンクリートの圧縮破壊挙動の評価, V-5

    MIKI Tomohiro, HIRAOKA Nobuo

    平成21年度土木学会関西支部年次学術講演会, May 2009, Japanese, 土木学会関西支部/JSCE Kansai branch, 神戸, Domestic conference

    Oral presentation

  • 鉄筋コンクリートはりのウエブ圧縮破壊に関する実験的研究, V-329, pp.657-658

    KOBAYASHI Chikaharu, MIKI Tomohiro, NIWA Junichiro

    62nd Annual Conference of JSCE, Sep. 2007, Japanese, 土木学会/JSCE, 広島, Domestic conference

    Oral presentation

  • 画像解析を用いたコンクリートのひび割れ進展評価に関する基礎的研究, V-355, pp.709-710

    HIGASHI Hironori, MIKI Tomohiro, NIWA Junichiro

    62nd Annual Conference of JSCE, Sep. 2007, Japanese, 土木学会/JSCE, 広島, Domestic conference

    Oral presentation

  • Influence of Shear Transfer at Diagonal Cracks on Nonlinear Behavior of RC Member

    NOMIYAMA Yoshihiko, MIKI Tomohiro, NIWA Junichiro

    61st Annual Conference of JSCE, Sep. 2006, Japanese, 土木学会/JSCE, 滋賀, Domestic conference

    Oral presentation

  • Fiber Reinforced Concrete Using Natural Materials

    MIKI Tomohiro

    Symposium of High Performance Fiber Reinforced Cementitious Materials, Nov. 2005, Japanese, 土木学会中部支部技術講習会/JSCE Chubu branch, 名古屋, Domestic conference

    Invited oral presentation

  • Seismic Torsional Analysis of Reinforced Concrete Columns Based on 3D Lattice Model

    Miki, T, Niwa, J

    Fifth International Conference on Fracture Mechanics of Concrete Structures (FraMCoS-5), May 2004, English

    Poster presentation

  • Prediction on Nonlinear Deformation of RC Bridge Piers Considering Pull-out of Longitudinal Reinforcing Bars

    MIKI Tomohiro, LERTSAMATTIYAKUL Manakan, NIWA Junichiro

    30th Annual Conference of JSCE Kanto Branch, Mar. 2003, Japanese, 土木学会, 新潟, Domestic conference

    Oral presentation

  • Lattice Model Analysis for Size Effect in Shear of RC Deep Beams

    LERTSAMATTIYAKUL Manakan, MIKI Tomohiro, NIWA Junichiro

    55th Annual Conference of JSCE, Sep. 2000, Japanese, 土木学会/JSCE, 仙台, Domestic conference

    Oral presentation

  • Fundamental Study on Uniaxial Tensile Capacity of Post-installed Mechanical Anchors Subjected to Cyclic Loading, V-366

    MIKI Tomohiro, FUJITA Momoka

    77th Annual Conference of JSCE, 16 Sep. 2022, Japanese

    Oral presentation

  • EFFECT OF ANALYTICAL AND EXPERIMENTAL BOND SLIP CURVES ON SHEAR BEHAVIOR OF CIRCULAR RC BEAMS STRENGTHENING BY CFRP BARS, v-623

    RABOTOVAO A. Mamy, MIKI Tomohiro

    77th Annual Conference of JSCE, 16 Sep. 2021, English

  • Mechanical Properties of Mortar Expanded by Alkali-Silica Reaction Due to External Alkali, V-485

    KURONO Jotaro, YASUDA Eiki, KONO Katsuya, MIKI Tomohiro

    77th Annual Conference of JSCE, 16 Sep. 2022, Japanese

  • Reversed cyclic loading tests of cylinderical members using ultra-high-strength fiber reinforced concrete, V-582

    MIYAHARA Kiyoshi, UEYAMA Yukio, TAGUCHI Takumi, TANAKA Satoshi, MIKI Tomohiro

    77th Annual Conference of JSCE, 16 Sep. 2022, Japanese

    Oral presentation

  • Study of fiber orientation of ultra-high-strength fiber reinforced concrete in thin-walled members with sheath pipes, V-581

    UEYAMA Yukio, TAGUCHI Takumi, TANAKA Satoshi, MIKI Tomohiro

    77th Annual Conference of JSCE, 16 Sep. 2022, Japanese

    Oral presentation

  • Effect of different bond slip curves on the behavior of Circular Cross-Sectional RC Beams Strengthening by CFRP Under Shear, V-8

    RABOTOVAO A. Mamy, MIKI Tomohiro

    2022 Annual Conference of JSCE Kansai Branch, 29 May 2022, English

    Oral presentation

  • Evaluation of Load Carrying Capacity of Prestressed Concrete Beams based on Nonlinear Analysis Considering Bond Property of Corroded PC Bars

    HASHIZUME Ayato, MIKI Tomohiro

    2022 Annual Conference of JSCE Kansai Branch, 29 May 2022, Japanese

    Poster presentation

Association Memberships

  • American Concrete Institute

  • Japan Prestressed Concrete Institute

  • The Society of Materials Science, Japan

  • Japan Concrete Institute

  • Japan Society of Civil Engineers

Research Projects

  • Clarification on Shear Resisting Mechanics of Damaged Concrete Members Based on Micro-Structural Interactive Fracture Mechanics

    Tomohiro Miki, Naoshi Ueda

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2019 - Mar. 2023, Principal investigator

  • Hideo Fujitani, Tomohiro Miki

    Japan Society for the Promotion of Science, Program for Fostering Globally Talented Researchers, Kobe University, 2017 - Mar. 2020, Coinvestigator, Co-authored internationally

    Competitive research funding

  • Effect Evaluation of Heterogeneous Damage in Concrete Due to its Volumatic Change on Shear Property in Reinforced Concrete Beams(Fostering Joint International Research)

    Miki Tomohiro, Benson Shing

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research), Fund for the Promotion of Joint International Research (Fostering Joint International Research), Kobe University, 2016 - 2017, Principal investigator

    This study aims a development for an accurate evaluation of the seismic performance of existing concrete structures and resilience after a severe earthquake. The performance of concrete structural members damaged due to material deteriorations such as the Alkali-Silica Reaction (ASR) has been evaluated. In addition, the target is extended to the high strength concrete members. In the experiment, an image analysis was conducted by means of an image correction method in order to determine a crack propagation in the ASR damaged concrete under tension or compression stresses. The image-based detection for a very brittle compressive failure in the ultra-high strength fiber reinforced cementitious materials were successively carried out using a high-speed camera and its harmonized data accumulation system. Nonlinear analysis for precast concrete bridge columns was also conducted to be investigated in the extended technology for a large domain of the image analysis developed here.

  • Development of Evaluation Method on Prestressing Force in PC Members by means of Stress Concentration around a Circular Hole

    Miki Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research, Grant-in-Aid for Challenging Exploratory Research, Kobe University, Apr. 2015 - Mar. 2018, Principal investigator

    This study includes a proposal of a stress measurement method using a stress concentration factor around the circular hole located in a prestressed concrete (PC) member. In this study, the strain distribution in the mortar and concrete was investigated experimentally through compressive loading tests and expansion pressure tests using a newly developed small cylindrical jack. A prototype of the small jack has a cylinder in which 10 mm of the diameter and 100 mm in the length. The experimental results of loading tests were compared with the analysis that is based on the theory of elasticity and the thick-wall cylinder theory. In addition, in order to evaluate the prestressing force in the PC members damaged due to the Alkali-Silica Reaction (ASR) by using the proposed method, the mechanical properties of concrete having the ASR-induced cracks, especially the elastic modulus and the Poisson’s ratio.

  • New Strengthening Method for Existing Concrete Structures to Achieve the Upgrading of Infrastructures

    Niwa Junichiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, 01 Apr. 2014 - 31 Mar. 2017

    In this research, the simple, effective and new strengthening methods for existing concrete structures have been developed. First one is the method to attach the CFRP sheet to concrete structures. Second one is the method to attach the ultra high-strength fiber reinforced concrete (UFC) plate to concrete structures. Last one is the method to use the embedded form and PC strands in combination. In the first one, when 50% of PC strands are cut off at the span center, the flexural capacity of a PC beam can be recovered completely by attaching CFRP sheets adequately at the bottom of a PC beam. In the second one, the flexural and shear capacities of damaged reinforced concrete beams can be restored by attaching the UFC plate on the surface of damaged reinforced concrete beams. In the last one, the strengthening effect of embedded form with fine diameter stainless bars and PC strands in combination can increase the capacity of the original damaged concrete structures significantly.

  • Effect Evaluation of Heterogeneous Damage in Concrete Due to its Volumatic Change on Shear Property in Reinforced Concrete Beams

    Miki Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A), Grant-in-Aid for Young Scientists (A), Kobe University, Apr. 2013 - Mar. 2016, Principal investigator

    Shear failure of concrete members is related to the fracture failure behavior of the concrete in tension. The presence of micro cracks due to the volume expansion of concrete during the hardening or material damages such as Alkali-Silica Reaction (ASR) also affects the fracture failure behavior of concrete. In this study, the fracture of materials which was pre-damaged due to the several reasons was investigated in detail. In addition, the damaged concrete members failed in shear were tested. Interestingly, the distribution of internal cracks in the concrete induced by the ASR was observed by means of a three dimensional integration technique using digital images which was captured from a thinly sliced concrete specimen polished from its surface. The fracture properties of the ASR damaged concrete were evaluated by not only conventional procedures and also the image analysis in order to measure the crack propagation in the concrete during loading tests.

  • 小孔内部応力計測と非接触表面変位解析を統合したコンクリートの微小領域評価システムの開発

    Tomohiro Miki

    Japan Science and Technology Agency, A-STEP (Adaptable and Seamless Technology Transfer Program through Target-driven R&D), フィージビリティスタディステージ 探索タイプ, Kobe University, 2011 - 2012, Principal investigator

    Competitive research funding

  • Construction of the integrated technology for the extension of life ofexisting concrete structures

    NIWA Junichiro, MATSUMOTO Koji, MIKI Tomohiro, WATANABE Ken

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Tokyo Institute of Technology, 2010 - 2012

    The target of this research work is to build the integrated technology for the maintenance of deteriorating existing concrete structures and to extend the life of infrastructures. This integrated technology is comprised of three elemental technologies. Namely, they are (1) the deterioration diagnosis technology for materials of existing concrete structures, (2) the evaluation technology for remaining load carrying capacity of deteriorated structures, and (3) the development of various repairing or strengthening techniques using new materials. By integrating these three elemental technologies, we have proposed practical and usefulmeasures for the maintenance of infrastructures.

  • Evaluation for Shear Resisting Mechanism of RC Beams Having Localized Corrosion in Longitudinal Reinforcement

    MIKI Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Kobe University, 2008 - 2009, Principal investigator

    This study presents experimental and analytical investigations to evaluate the shear resisting mechanism of RC members damaged due to steel corrosion. In the experiment, a developed measurement instrument embedded in the web concrete of RC beams is used to obtain the internal information in the concrete being affected by the corrosion condition of reinforcement. In addition, an image analysis which can identify the localization of strain on the concrete surface is used in the experiment. The experiment shows the influence of corrosion cracks occurred along with the longitudinal reinforcement on the initiation and propagation of the decisive diagonal crack due to the further loading. Moreover, the nonlinear analysis shows that the shear carrying capacity of the RC beams having sufficient anchorage reinforcement increases when the bond property degrades as the steel corrosion proceeds. This behavior of the RC beams can be explained by means of the response of arch elements in the lattice model that represent the formation of the tied arch mechanism in the beam.

  • Evaluation of Failure Progress Behavior of Structural Concrete by Integrated Image Analysis

    NIWA Junichiro, WATANABE Ken, MIKI Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Tokyo Institute of Technology, 2007 - 2009

    To clarify the failure progress behavior of structural concrete, the image analysis system which can identify the localization of strain in real time has been completed. In addition, the super high speed photography system which can capture high-speed crack development and the wide-area image analysis system which can be applied to large-scale concrete structures have been established. Finally, by integrating these systems, the new image analysis system to capture the failure progress behavior of various concrete structures has been presented.

  • Development of Seismic Performance Evaluation Method for Concrete Structural System

    Tomohiro Miki

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Tokyo Institute of Technology, Apr. 2006 - Mar. 2007, Principal investigator

    本研究は、鉄筋コンクリート(RC)部材のせん断耐荷機構をシンプルに評価できる3次元格子モデルを用いて、地震力を受けるRC構造物全体系の3次元地震時挙動を評価することを試みたものである。昨年度構築した3次元格子モデルを用いて、鉄筋腐食したRCはり部材のせん断耐荷機構の予測するために、鉄筋とコンクリートの付着劣化モデルを新たに3次元格子モデルに組み込むことを試みた。特に、実際の供用環境下で鉄筋腐食したRC部材を対象として、3次元格子モデルを用いた解析を行い、部材の残存構造性能を予測した。本検討から、以下の2つの結論を得た。1.複数本の主鉄筋それぞれが異なる腐食状態を有するRC部材の場合,その影響を2次元モデルでは適切に再現できないことを確認した。2.3次元格子モデルを用いた解析によって,鉄筋腐食したRC部材の残存構造性能の評価を試みた結果,鉄筋降伏荷重および最大荷重に関して,実験値をほぼ妥当に予測することができた。なお、鉄筋腐食などの劣化を考慮した構造物全体系の耐震性能評価については、将来の課題として残っている。 また、昨年に続き、鋼繊維補強コンクリートを用いた構造部材を対象とした基礎的な実験も行った。ここでは、分布ひび割れが既に生じている部材を対象として、鋼繊維による補強効果を実験的に検討している。実験結果から、供試体表面を区分し、各区分領域内で生じているひび割れの平均幅と長さの積をひび割れ密度インデックスと定義し、算出した値が部材のせん断耐力に影響することがわかった。また、既存のひび割れがRC部材のせん断挙動に影響を与えることが実験からわかったため、将来的にはひび割れ密度インデックスを用いて、部材のせん断耐力を予測することを目指していく。

  • Study of Influence of Ibmperature on Durability of Reinforced Concrete

    OTSUKI Nobuaki, NIWA Jyunichiro, SAITO Tsuyoshi, MIKI Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, 2006 - 2007

    (1) It was confirmed that the corrosion rate of steel bars in concrete increased with the temperature rising. And it was confirmed that the deterioration of reinforced concrete due to the steel corrosion apparently agreed with the Arrhenius theory. (2) In addition, it became possible to construct the ionic migration system in the concrete which considers the influence of temperature by in ionic migration system (Nernst - to designate Planck system as basic system, ionic migration system which considers Debye-Huckel system which expresses influence of coexistence ion and electrical neutrality condition for judging entire ionic migration) in the concrete which is the research result of the applicant Arrenius system adding. (3) According to the results, the life time of reinforced concrete exponentially decreased with the temperature of the city increasing. Especially, it was indicated that the environment against steel corrosion in concrete from the viewpoint of temperature effect. The life time of reinforced concrete in South-East Asia became 70% of that in mild temperature environment (20℃).

  • Research on Rational Design of Prestressed Concrete Structures

    NIWA Junichiro, YOKOTA Hiroshi, MIKI Tomohiro

    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, 2005 - 2006

    The purpose of this research is to evaluate the shear resisting mechanism of prestressed concrete (PC) structural members based on the mechanical consideration and to provide the adequate safety against the shear failure of PC structural members. To achieve this purpose, experimental and numerical investigations have been done during 2005 and 2006. Obtained results are as follows : In 2005, experiments and numerical analyses were carried out to evaluate the shear resisting mechanism of PC members. Various experimental data were collected throughout the world. These data were used to evaluate the accuracy and validity of the simplified truss model. Parametric numerical analyses were also performed to formulate the simplified truss model for PC structural members with shear reinforcement. Finally, the simplified truss model to explain the shear resisting mechanism of PC members has been proposed. In 2006, the experiments of externally prestressed concrete beams and also segmental PC beams with external cables were performed. These experiments have been done to examine the accuracy and validity of the simplified truss model. From the experimental and numerical examinations, it has been confirmed that the simplified truss model can be adopted to evaluate the shear resisting mechanism and also to predict the shear resisting capacity of PC members. The obtained results of this research have been published in various journals, such as JSCE Journal of Material, Concrete Structures and Pavements, and the Proceeding of Japan Concrete Institutes, etc.

  • Nonlinear Analysis using three-dimensional Dynamic Lattice Model for Reinforced Concrete Structures Subjected to Seismic Force

    MIKI Tomohiro

    Japan Society for the Promotion of Science, Grant-in-Aid for JSPS Fellows, Grant-in-Aid for JSPS Fellows, Tokyo Institute of Technology, 2003 - 2004, Principal investigator

    Competitive research funding