钢筋沥青隔震墩振动台试验及地震响应有限元分析  

Shaking table test and finite element analysis of seismic response in reinforced asphalt isolation pier

作　　者：尚守平[1] 周浩[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《重庆大学学报（自然科学版）》2014年第6期38-44,共7页Journal of Chongqing University

基　　金：国家十二五科技支撑计划资助项目(2011BAJ08B00)

摘　　要：在足尺钢筋沥青隔震墩砌体房屋的正弦激励振动台试验的基础上,用有限元分析软件ANSYS建立适当的空间模型并对其进行数值模拟。将分析结果与足尺模型振动台试验结果进行比较,结果表明:有限元分析结果与试验结果基本一致,证明了本有限元在钢筋沥青隔震墩分析中的适用性。在此基础上,用本有限元程序分别对隔震和非隔震有限元模型进行地震响应分析,得出相关结论:相同地震波作用下隔震层的位移随输入幅值的增大而增大;隔震模型的顶部加速度幅值与第1层层间位移幅值小于非隔震模型,表明隔震层在地震波作用下隔震性能良好,大幅度降低了上部结构的底部剪力。Sinusoidal excitation shaking table test of full-scale reinforced asphalt isolation pier masonry building is carried out, and ANSYS is applied to set appropriate space finite element model, and then numerical simulation is given to the isolation pier. Comparison of both results of numerical simulation and shaking table test indicates that they agree well with each other. The result shows the applicability of finite element in reinforced asphalt isolation pier analysis. Seismic response analysis is given to the isolation and non-isolation model,and the result shows displacement of isolation layer is increased with the increase o{ input amplitude under same seismic excitation. The acceleration amplitude at the top of structure and story displacement of isolation model is less than that of non-isolation model, which indicates that the isolation layer has an excellent performance under seismic action, and it reduces the shear force of upper structure.

关 键 词：隔震 钢筋沥青隔震墩 振动台试验 地震响应分析 隔震性能 

分 类 号：TU375[建筑科学—结构工程]