MAEKAWA Koichi

Affiliation

Faculty of Urban Innovation, Division of Urban Innovation

Job Title

Professor

Research Fields, Keywords

concrete engineering

Related SDGs




The Best Research Achievement in Research Career 【 display / non-display

The Best Research Achievement in the last 5 years 【 display / non-display

Graduating School 【 display / non-display

  • 1976.04
    -
    1980.03

    The University of Tokyo   Faculty of Engineering   Civil Engineering   Graduated

Graduate School 【 display / non-display

  • 1980.04
    -
    1982.03

    The University of Tokyo  Graduate School, Division of Engineering  Department of Civil Engineering  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  The University of Tokyo

Campus Career 【 display / non-display

  • 2017.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Urban Innovation   Division of Urban Innovation   Professor  

  • 2017.04
    -
    Now

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Architecture,Infrastructure,Ocean Engineering and Ecosystem Science   Professor  

  • 2017.04
    -
    Now

    Concurrently   Yokohama National UniversityCollege of Urban Sciences   Department of Civil Engineering    Professor  

  • 2017.04
    -
    Now

    Concurrently   Yokohama National UniversityGraduate School of Urban Innovation   Department of Infrastructure and Urban Society   Professor  

External Career 【 display / non-display

  • 2018.06
     
     

    The University of Tokyo   School of Engineering   Professor Emeritus  

  • 1996.04
    -
    2018.03

    The University of Tokyo   Department of Civil Engineering   Professor  

  • 1992.05
    -
    1994.04

    Asian Institute of Technology   Structural Engineering Division   Associate Professor  

  • 1986.04
    -
    1996.03

    The University of Tokyo   Department of Civil Engineering   Associate Professor (as old post name)  

  • 1985.04
    -
    1986.03

    The University of Tokyo   Department of Civil Engineering   Research Assistant  

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Academic Society Affiliations 【 display / non-display

  • 1980.04
     
     
     

    Japan Society of Civil Engineers

  • 1980.04
     
     
     

    Japan Concrete Institute

  • 2004
     
     
     

    Asian Concrete Federation

  • 2000
     
     
     

    The International Federation for Structural Concrete (fib)

  • 1995
     
     
     

    American Concrete Institute

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Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Structural engineering/Earthquake engineering/Maintenance management engineering

  • Civil engineering materials/Construction/Construction management

 

Research Career 【 display / non-display

  • Constitutive Modeling of Reinforced Concrete

    Basic Science Research Program  

    Project Year: 1982.04  -  1992.03 

  • Development of self-compacting concrete

    Pre-Project Research on Leading Construction Technology  

    Project Year: 1985.04  -  1990.03 

  • Nonlinear dynamic analysis of reinforced concrete structures

    Basic Science Research Program  

    Project Year: 1988.04  -  2005.03 

  • Thermodynamics and durability mechanics of structural concrete

    Basic Science Research Program  

    Project Year: 1992.04  -   

  • Life cycle infra-stock assessment and management

    The Other Research Programs  

    Project Year: 2007.04  -   

Books 【 display / non-display

  • Multi-Scale Modeling of Structural Concrete

    Koichi Maekawa, Tetsuya Ishida, Toshiharu Kishi (Part: Joint Work , Range: All chapters )

    CRC Press  2008.11 ISBN: 9780415465540

    Amazon

  • Nonlinear Mechanics of Reinforced Concrete

    Koichi Maekawa, Amon Pimanmas, Hajime Okamura (Part: Joint Work , Range: All chapters )

    CRC Press  2003.03 ISBN: 9780415271264

    Amazon

  • Modelling of Concrete Performance

    Koichi Maekawa, Rajesh Chaube, Toshiharu Kishi (Part: Joint Work )

    CRC Press  1999.09 ISBN: 9780429081002

    Amazon

  • High Performance Concrete

    Hajime Okamura, Koichi Maekawa, Kazumasa Ozawa (Part: Joint Work )

    1993.09 ISBN: 4-7655-1530-3

    Amazon

  • 鉄筋コンクリートの構成則と非線形解析

    Hajime Okamura, Koichi Maekawa (Part: Joint Work )

    技報堂出版  1991.05 ISBN: 4765515060

    Amazon

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Thesis for a degree 【 display / non-display

Papers 【 display / non-display

  • Failure mode of deteriorated concrete tunnel sections under subsidence and localised shear

    Hiroaki Aoki, Fan Shu, Yuto Yamanoi, Ren Mingqian, Hideaki Takahashi, Koichi Maekawa

    Structures and Buildings ( Institution of Civil Engineers )  175   1 - 15   2021.09  [Refereed]

    Joint Work

    DOI

  • Multi-directional fixed crack model extended to masonry structures

    Yuto Yamanoi, Takashi Miura, Masoud Soltani, Koichi Maekawa

    Journal of Advanced Concrete Technology ( Japan Concrete Institute )  19 ( 9 )   977 - 987   2021.09  [Refereed]

    Joint Work

    DOI

  • Remaining Shear Capacity of Fire-Damaged High Strength RC Beams after Moist Curing

    Kazuaki Higuchi, Keitai Iwama Koichi Maekawa

    Journal of Advanced Concrete Technology ( Japan Concrete Institute )  19 ( 8 )   897 - 912   2021.08  [Refereed]

    Joint Work

    DOI

  • Numerical simulation and experiment on the coupled effects of macro-cell corrosion and multi-ion equilibrium with pseudo structural concrete

    Zhao Wang, Koichi Maekawa, Hiroki Takeda, Fuyuan Gong

    Cement and Concrete Composites ( Elsevier )  123   1 - 14   2021.07  [Refereed]

    Joint Work

    DOI

  • Coupled thermo-hydro-mechanical analysis of reinforced concrete beams under the effect of frost damage and sustained load

    Fuyuan Gong, Zhao Wang, Jin Xia, Koichi Maekawa

    Structural Concrete ( The International Federation for Structural Concrete (fib) )  22 ( 4 )   1 - 16   2021.07  [Refereed]

    Single Work

    DOI

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Academic Awards Received 【 display / non-display

  • The three excellent papers of the year 2019-2020

    2020.09.01   Journal of Advanced Concrete Technology   Thermo-mechanistic multi-scale modeling of structural concrete at high temperature

    Winner: Keitai Iwama, Kazuaki Higuchi, Koichi Maekawa

  • Japan Concrete Institute Prize (research)

    2019.06   Japan Concrete Institute   Computational Life Assessment of ASR-damaged RC Decks by Site-Inspection Data Asimilation

    Winner: Yuya Takahashi, Yasushi Tanaka, Koichi Maekawa

  • Japan Concrete Institute Prize (research)

    2018.06   Japan Concrete Institute   Remaining Fatigue Life Assessment of Damaged RC Decks -Data Assimilation of Multi-scale Model and Site Inspection-

    Winner: Yasushi Tanaka, Yuya Takahashi, Koichi Maekawa

  • Best Paper Award

    2014.09   Asian Concrete Federation   Chemo-Hygral Modeling and Structural Behaviours of Reinforced Concrete Damaged by Alkali Silica Reaction

    Winner: Yuya Takahashi, Koki Shibata, Koichi Maekawa

  • Japan Concrete Institute Prize (research)

    2014.06   Japan Concrete Institute   Pseudo-Cracking Approach to Fatigue life Assessment of RC Bridge Decks in Service

    Winner: Chikako Fujiyama, Xue Juan Tang, Koichi Maekawa, Xue Hui An

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Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for JSPS Fellows

    Project Year: 2020.11  -  2023.03  Investigator(s): Koichi Maekawa

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2020.04  -  2023.03  Investigator(s): Koichi Maekawa

  • Long-term dynamic simulation of large-scale RC-PC infrastructures based on quasi thermo-hygral modeling

    Grant-in-Aid for Scientific Research(S)

    Project Year: 2011.04  -  2016.03  Investigator(s): Koichi Maekawa

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2011.04  -  2012.03  Investigator(s): Koichi Maekawa

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2008.04  -  2011.03 

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Presentations 【 display / non-display

  • RESEARCH ON EARTHQUAKE DYNAMIC BEHAVIOR OF SUBWAY MULTI- SECTION TUNNEL IN TRANSVERSE DIRECTION

    OTSUKA Tsutomu, SASAKI Kota, NITTA Hiroki, KONISHI Shinji, TSUNO Kiwamu, SANAGAWA Taisuke, KAMADA Kazutaka, TSUCHIYA Satoshi, MAEKAWA Koichi

    Journal of Japan Society of Civil Engineers, Ser. F2 (Underground Space Research)  2020   Japan Society of Civil Engineers

     View Summary

    <p> This research carries out model tests to investigate the dynamic behavior of multi-section cut-and-cover subway tunnels in transvers direction by seismic motion, which has not been fully investigated. A multi-section model tunnel as well as a general single box type one is installed in a soil vessel and it is found that the sectional force corresponds to those obtained by tunnel design. Then, the L2 earthquake motion (Spectrum II) based on design standard for railway structures is applied to the soil vessel. The results show that the bending moment and shear force are comparatively large in the center wall, the tendency is different among the loading direction. Moreover, the results of 3D dynamic finite element analysis for evaluation of model tests shows approximately the same situation and this research gives various findings to establish the seismic analysis method of multi-section cut-and-cover subway tunnels.</p>

    DOI CiNii

  • DURABILITY EVALUATION WITH WHEEL RUNNING TESTS AND COMPUTATIONAL SIMULATIONS ON PRECAST PC SLAB WITH HALF RIGID JOINT UNDER THE NEGATIVE BENDING MOMENT

    KITA Shinichiro, SAKURAI Nobuaki, MAEKAWA Koichi

    Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)  2020   Japan Society of Civil Engineers

     View Summary

    <p> Wheel running tests have been conducted on precast PC slabs jointed with only fillers under the maximum negative bending moment assumed on the intermediate support of actual plate girder bridge. Constant repetitive moving load of 250kN was applied on Slabs jointed with polymer cement mortar and epoxy resin mortar, and these specimens showed interfacial fracture with smaller number of cycles than expected. Meanwhile, tensile fatigue tests have been also conducted on two kinds of fillers, and the different S-N curves were observed between the fillers and concrete.</p><p> Considering the above tests, computational simulations have been conducted. Firstly, the history of the stress on the interference of joints until initial damage was investigated by reproducing wheel running tests. Secondly, the actual durability of slabs jointed with the fillers was evaluated by parametric analysis with negative bending moment and repetitive moving load.</p>

    DOI CiNii

  • LIFETIME ASSESSMENT OF CONCRETE BRIDGE DECKS -Integrated traffics, ASR, steel corrosion and freeze-thaw actions

    Koichi Maekawa

    The 3rd ACF Symposium 2019  (Sapporo, Japan)  2019.09   The 3rd ACF Symposium

  • EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF SUBWAY MULTI-SECTION TUNNEL IN TRANSVERSE DIRECTION

    Koichi Maekawa,T Seto,T Otsuka,K Sasaki,H Nitta,S Konishi

    The 3rd ACF Symposium 2019  (Sapporo, Japan)  2019.09   The 3rd ACF Symposium 2019

  • RELATIONSHIPS BETWEEN EXPANSIONS AND MECHANICAL PROPERTIES OF CONCRETE UNDER COUPLED FREEZE-THAW CYCLES AND ALKALI-SILICA REACTIONS

    Koichi Maekawa,Yuya Takahashi,Izuru Segawa,Fuyuan Gong

    The 3rd ACF Symposium  ( Sapporo, Japan)  2019.09   The 3rd ACF Symposium

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