报告简介：

This lecture introduces the development of mesoscale modeling approach with Rigid Body Spring Model (RBSM) for concrete with damages for the multi-scale modeling of concrete and concrete structures with damages. The development works have been conducted by the team, including the authors, at Hokkaido University. The mesoscale modeling is with the generic model applicable for various damage/deterioration. The main concept for the mesoscale modeling is explained first with the literature review to show the necessity of the mesoscale modeling. As the simulation results, macroscale stress-strain relationships and crack propagation in compression and tension under static, sustained, and cyclic loadings, mesoscale damage evolution under freeze thaw cycles (FTCs), and FTCs combined with fatigue loadings and the resulting macroscale stress-strain relationships under compression and tension, and macroscale chloride diffusion of concrete with frost damages are presented. Using the numerical parametric study with the mesoscale simulation, the macroscale stress-strain relationships in compression and tension of concrete with frost damages are presented and applied to the macroscale FEM analysis for concrete beam with frost damage. The analytical results show the applicability of this multi-scale modeling approach. Meanwhile, the remaining tasks for the developed mesoscale modeling approach with RBSM are summarized, which are development of 3D models, extension of generic mesoscale model to other damage/deterioration cases, interface model between concrete and reinforcement, model for materials other than cement concrete, microscale modeling of materials, multi-field analysis, modification of the inaccuracy with modeling by RBSM as well as the experimentation in mesoscale.

报告人简介：

UEDA Tamon，日本工程院院士，深圳大学特聘教授，北海道大学名誉教授。1982年从东京大学获得博士学位。主要研究领域：混凝土和混合结构的数值分析、结构寿命预测、结构性能提升、抗震设计和结构设计方法等。曾获得fib功绩勋章，Thammasat荣誉奖和JSCE国际终身贡献奖。主要社会兼职有：国际混凝土、钢筋混凝土、预应力混凝土标准化组织（ISO/TC71）主席，国际混凝土结构联合会（fib）技术理事会成员，国际FRP建筑学会（IIFC）咨询委员会主席，亚太结构工程与建设（EASEC)国际指导委员会主席，东南亚工程教育发展网络（AUN/SEED-Net）首席顾问和代理执行董事，亚洲混凝土联合会（ACF）前主席，日本必赢766net手机版会（JSCE）前主席。