MULTI-SCALE ANALYSIS OF DAMAGE PROCESS FOR CONCRETE STRUCTURES
The aim of this study is to investigate and to simulate damage mechanisms of concrete structures through the multi-scale approaches. Based on the discrete element method (DEM), the mesoscopic numerical model was developed to simulate the failure process of concrete. The aggregates were simplified as rigid bodies while the surrounding mortar was treated as springs connecting the aggregates. By considering the random distribution of aggregates, the mechanical behavior of concrete was obtained. Based on the constitutive relationship of concrete material generated in the mesoscopic model, the seismic behavior of RC columns and the collapse responses of reinforced concrete frame structures were analyzed by using macroscopic multi-spring model (MS) and DEM. Simulation examples showed that the bridge between the mesoscopic property of concrete materials and the macroscopic behavior of reinforced concrete structures can be set up by using the methodology of multi-scale analysis.
Concrete material Concrete structure Multi-scale Discrete element method (DEM) Numerical simulation
Xiang-Lin Gu Xiao-Jing Yin Xian-Yu Jin Feng Lin Qing-Hua Huang
Department of Building Engineering, Tongji University, Shanghai 200092, P.R. China Department of Civil Engineering, Zhejiang University, Hangzhou 310058, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
344-349
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）