2017 - 2020 Study on interface variation between different materials in concrete depending on temperature history during hardening and its association with durability
2018 - 2020 Estimation of internal corrosion degree of reinforcement in concrete using 3D meso-scale simulation
2016 - 2019 アジア域の劣化したRC構造物の残存性能評価と補修のための大規模数値解析
2016 - 2019 Evaluation of residual structural performance of damaged bridge members by three dimensional meso scale analysis and its retrofit
2013 - 2015 Numerical Simulation of failure of RC beam-column joint by 3D discrete analysis method and proposal of rational reinforcement bar arrangement
2012 - 2015 Development of robust fiber reinforced cementitious composite for structural material
2011 - 2012 An investigation of detailingroefinforced concrete by the evaluation of performance of anchorage and concrete compaction
2011 - 2012 A Study of a Growth Process of Community-Based Organizations using a Social Network Analysis
2011 - 2011 コンクリート系床版に内在する凝縮水の動態による早期疲労限界状態
2010 - 2011 A development of robust fiber reinforced cementitious composites under multi directional stress field and its application
2008 - 2010 Multi-scale modeling of cementitious composites for performance assessment of reinforced concrete infrastructures subjected to coupled with high-cycle load and environmental impacts
2008 - 2009 重力駆動式自己切返し反応システムによる大規模コンポスト化装置の開発
2008 - 2009 development of fatigue constitutive model of fiber reinforced cementitious composites with multi-directional cracking
2007 - 2007 損傷を受けたRC部材性能照査のための三次元微細構造解析システムの構築
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Papers (102)：
Jiaxu Yao, Jie Luo, Dawei Ren, Kohei Nagai. Mesoscopic simulation of interface and loop connections of precast concrete structures by 3D RBSM. Structures. 2024. 70
Yi Wang, Ridho Surahman, Chaoyang Zhou, Guozhi Lin, Kohei Nagai, Tamon Ueda. Flexural performance of narrow RC beams hybrid strengthened by TRECC plate. Engineering Structures. 2024. 319
Takeru Kanazawa, Kohei Nagai, John E. Bolander. Optimization-Based Analysis of Diagonal Tension Failure of Reinforced Concrete Dapped-End Beams. Journal of Structural Engineering. 2024. 150. 10
Xiang Lin Gu, Tian Zhou, Kohei Nagai, Hong Zhang, Qian Qian Yu. Prediction of seismic performance of a masonry-infilled RC frame based on DEM and ANNs. Engineering Structures. 2024. 316
Sitthinon Kaewsawang, Punyawut Jiradilok, Kohei Nagai. Discrete mesoscopic simulation of effects of reinforcement details on performance of reinforced concrete half-joints. Construction and Building Materials. 2024. 444
EDDY Liyanto, AWASTHI Anupam, 松本浩嗣, 長井宏平, 浅本晋吾. Mesoscopic analysis of different expansion causes in concrete by 3D Rigid Body Spring Model. 生産研究. 2017. 69. 4
