用于砖砌体修正屈服面的塑性损伤模型  

A Modified Plastic Damage Model for Masonry Structure

作　　者：岳健广[1] 钱江[1] 伍凯[2] 富秋实[1] 潘艳[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]河海大学土木与交通学院,江苏南京210098

出　　处：《力学季刊》2012年第1期146-152,共7页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金项目(90815029;51021140006);科技部国家重点实验室基金资助项目(SLDRCE10-B-07);973国家重点基础研究发展计划项目(2007CB714202)

摘　　要：基于典型的砌体材料屈服函数模型,对混凝土塑性损伤模型屈服函数进行修正,将之用于砌体结构或构件的性能模拟。建议双轴抗压强度与单轴抗压强度比值取为2.0,修正后的屈服曲线与典型的砌体材料屈服曲线及试验结果拟合较好。对某外砖墙-钢筋混凝土框架推覆试验进行了非线性计算,分析了整体结构和墙体的承载力性能,阐明了墙体在整体结构破坏过程中的耗能情况,正确反映了结构整体性能和墙体的主要破坏模式,验证了修正屈服面的塑性损伤模型在模拟砌体结构中的应用。Based on the typical yield function of masonry material, a plastic damage model with modified yield function was suggested to describe the overall behavior of masonry members or structures. The sug- gested ratio value of the biaxial compressive strength to the uniaxial compressive strength is 2.0. The modified yield function agrees well with test results. The nonlinear behavior of a RC frame structure with external masonry walls had been simulated by the suggested model. The bearing capacity and the energy dissipation mechanism of the masonry walls were discussed. It was shown that the proposed model was suitable in practical application to masonry structures and can correctly reflect the damage behavior of ma- sonry walls.

关 键 词：塑性损伤模型 屈服函数 砌体结构 非线性分析 

分 类 号：TU375[建筑科学—结构工程] TU313