摘要
针对目前砌体结构计算模型在弹塑性动力时程分析中的不足,本文采用一种三弹簧单元宏观模型进行整体结构的非线性计算。首先,将其计算结果与单片砌体构件试验结果对比,验证了模型的准确性;随后,采用该模型对一简单空间砌体结构进行静力和动力分析,并计算了不同地震烈度下的结构响应,得到令人较为满意的结果。以层间位移角定义了各墙体构件的弹性、破坏和极限3个阶段,对整体结构的损伤情况给予了评价,并提出以竖向承载构件完全失效作为结构倒塌的判别准则,使三弹簧单元模型在砌体结构抗震研究方面具备一定的适用性。
According to the disadvantages of present numerical model for elastic-plastic seismic response analysis of masonry structures, a macro numerical model consists of three spring elements is used for non-linear calculation of the whole structure. First ,the accuracy of three spring elements model（TSEM） is testified by comparing with the experimental result of single specimen of masonry wall. Then the TSEM is used for static and dynamic analysis of a simple spatial masonry structure, responses of the structure under different seismic intensity are calculated as weU,and the result is satisfied. The damage evolution of each wall is classified to three elastic stage,failure stage and ultimate stage by story drift angle, to evaluate damage status of the whole structure. In addition, completely failure of the vertical load bearing components is used as the criterion of collapse, to improve the applicability of the TSEM on seismic resistance research of masonry structures.
出处
《四川建筑科学研究》
北大核心
2011年第6期170-175,共6页
Sichuan Building Science
基金
国家科技支撑计划课题(2009BAJ28B01)
中央高校基本科研业务费专项基金资助项目(2010XS01)
关键词
砌体结构
三弹簧单元模型
滞回性能
非线性计算
masonry structure
three spring elements model（TSEM）
hysteretic behavior
nonlinear analysis
