地震作用下大体积混凝土结构损伤发展估计  

Prediction of damage evolution of massive concrete structure subjected to earthquake excitation

作　　者：刘军[1] 林皋[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024

出　　处：《大连理工大学学报》2007年第2期228-232,共5页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(重点项目50139010)

摘　　要：建议了一种地震荷载作用下混凝土结构损伤发展估计的思路和方法,通过混凝土结构在循环荷载作用下损伤演化特点的分析,推导出一种考虑组合效应的损伤演化方程.该方程反映了混凝土材料在复杂荷载作用下的多轴效应,形式简单便于数值实现.对实际工程动力损伤分析的结果表明,损伤理论更适用于混凝土结构的力学性能分析.A damage mechanics approach to predict the damage evolution of concrete structure subjected to earthquake load is proposed. In the approach, damage evolution equation in which the effect of combination of tension and compression is taken into consideration is obtained according to the analysis of feature of damage evolution for concrete structures under cyclic loads. In this equation, the multiaxial effect of concrete material is reflected under complicated load condition. Simple form is easy to numerical implementation. The dynamic damage analysis results of actual project indicate that damage theory is appropriate to analyze the concrete structure mechanics properties.

关 键 词：地震荷载 损伤演化 动力损伤分析 

分 类 号：TU528[建筑科学—建筑技术科学]