砌体结构有限元模型在结构地震响应中的应用  

Application of finite element model of masonry to seismic response analysis

作　　者：安栋[1] 屈铁军[2] 

机构地区：[1]天津大学土木工程系,天津300072 [2]北方工业大学建筑工程学院,北京100144

出　　处：《地震工程与工程振动》2014年第1期123-130,共8页Earthquake Engineering and Engineering Dynamics

基　　金：北京市属高等学校人才强教深化计划项目(PHR201107106);北京市自然科学基金(8142015)

摘　　要：本文使用SeismoStruct软件建立了砌体结构的有限元模型,并设计制作带构造柱圈梁的两层砖砌体结构,进行低周反复加载下的抗震性能试验,研究了滞回特性和承载力情况,将有限元与试验结果进行对比分析。随后采用这一有限元模型,输入强震记录、人工合成以及调整后的强震记录等3种不同类型的地震动,以层间位移角作为结构地震响应的重要参数,研究了不同地震动参数影响下的结构响应并分析其相关系数。研究结果表明:有限元模型能够较好地模拟该砌体结构的滞回特性,模拟与试验结果基本吻合;在本文考虑的四种地震动参数中,Housner强度对结构地震响应的影响最大,相关性最强;考虑非平稳性的地震动输入对结构响应有明显的增大效应。In this paper, the software SeismoStruct is used to establish finite element model. A two story masonry building with constructional column and ring beam is designed and constructed to investigate its seismic perform- ance. The building is tested under low cyclic loading to study its hysteretic property and bearing capacity. This fi- nite element model is applied to seismic response analysis. Seismic input comes from natural recordings, artificial synthetic acceleration and adjusted natural recordings. The interstory drift is selected as the response parameter to represent the seismic response. Different measures of seismic intensity for input selection have been considered. The results show the hysteretic property of masonry structure can be simulated by this finite element model. The Housner intensity is proved to be the more effective impact on structural response. Seismic inputs considering non- stationarity significantly enhance the structural responses.

关 键 词：砌体墙宏观模型 低周反复加载 滞回曲线 地震响应 非平稳 

分 类 号：TU365[建筑科学—结构工程] TU311.4