Multi-scale modeling of cementitious composites for performance assessment of reinforced concrete infrastructures subjected to coupled with high-cycle load and environmental impacts

水泥基复合材料的多尺度建模，用于评估受高循环载荷和环境影响的钢筋混凝土基础设施的性能

• 批准号: 20246073
• 负责人: MAEKAWA Koichi
• 金额: $ 30.62万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20246073/
• 关键词: 耐久性力学; 高サイクル疲労; 移動荷重; マルチスケール; コンクリート構造; 非直交ひび割れ; 環境作用; 非直行ひび割れ

The multi-scale simulation model to quantify the micro damage of cracked/uncracked cementitious composites as well as structural performance made by massive concrete was developed. The model is capable of successfully simulating a long-term behaviors of concrete structure subjected to repeated thousand～million cycles of loads in its life. Furthermore, ion resolution from concrete, such as calcium, boron etc. and re-absorption model for underground concrete structure was provided. With coupling the macro and micro models, this study enables to predict long-term mechanical and thermo-dynamic performances of structural concrete and its environmental impact.

建立了大体积混凝土复合材料开裂/未开裂的微观损伤及结构性能的多尺度仿真模型。该模型能够成功地模拟混凝土结构在其寿命期内经受重复荷载作用的长期行为。此外，还对混凝土中的钙、硼等离子进行了解析，并提出了地下混凝土结构的重吸收模型。通过宏观和微观模型的耦合，本研究能够预测结构混凝土的长期力学和热力学性能及其对环境的影响。

项目成果

A Proposal of Durability Assessment for Existing Bridge Decks Subjected to Heavy Traffic

现有大交通桥面耐久性评估建议

• 发表时间: 2009
• 作者: Chikako Fujiyama;Koichi Maekawa;Fujiyama Chikako;藤山知加子;藤山知加子;藤山知加子;藤山知加子;Chikako Fujiyama
• 通讯作者: Chikako Fujiyama

Engineering Platform of Managing huge amount of knowledge for Simulat ion of Infrastructure Dynamics

管理海量基础设施动态模拟知识的工程平台

• 发表时间: 2009
• 作者: Tsunemi Watanabe;Hisashi Kitagawa;Koichi Maekawa
• 通讯作者: Koichi Maekawa

Enhanced electro-chemical corrosion model for reinforced concrete under severe coupled action of chloride and temperature

• DOI: 10.1016/j.conbuildmat.2010.09.014
• 发表时间: 2011-03-01
• 期刊: CONSTRUCTION AND BUILDING MATERIALS
• 影响因子: 7.4
• 作者: Hussain, Raja Rizwan;Ishida, Tetsuya
• 通讯作者: Ishida, Tetsuya

Numerical Simulation on Shear Capacity and Post-Peak Ductility of Reinforced High-Strength Concrete Coupled with Autogenous Shrinkage

• DOI: 10.3151/jact.9.73
• 发表时间: 2011-02
• 期刊: Journal of Advanced Concrete Technology
• 影响因子: 2
• 作者: Esayas Gebreyouhannes;K. Maekawa

Smeared-crack Modeling of R/ECC Membranes Incorporating an Explicit Shear Transfer Model

• DOI: 10.3151/jact.8.315
• 发表时间: 2010-10
• 期刊: Journal of Advanced Concrete Technology
• 影响因子: 2
• 作者: B. Suryanto;K. Nagai;K. Maekawa