多维地震下大底盘多塔楼隔震结构平扭耦联响应分析  

Analysis of Torsional Vibration Response in Isolated Multi-tower Structure with Large Podium Subjected to Multi-dimensional Earthquake

作　　者：杜永峰[1,2] 贾淑仙[1] 

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《工程抗震与加固改造》2012年第5期62-67,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(50978130)

摘　　要：采用串联刚片系模型,对隔震结构的多维地震响应进行了分析。基于弹性和弹塑性时程分析方法,利用SAP2000有限元软件探讨了双向水平地震输入时不对称多塔楼基础隔震、层间隔震和抗震结构的地震响应特性,比较了结构自振周期、结构位移、结构加速度、剪力、扭矩和塑性铰等特点。结果表明,采用隔震技术可以显著地降低地震的破坏作用并且减小塑性铰的数量和变形,而层间隔震对减小多塔楼结构体系的扭转作用更为明显。In this paper, rigid panel model is used to analysis the multi-dimensional seismic response of isolated structure. Based on elastic and elastic-plastic time-history analysis method, the seismic response of base isolation, layer isolation and seismic structure of natural period, displacement, structrual acceleration, shear, torque, the plastic hinge is discussed by using finite element software SAP2000 under the two-directional horizontal earthquake. The result shows that the structure using isolation technology can significantly reduce the destructive effects of earthquakes, and reduce the plastic hinge quantity and deformation. And the torsional vibration response is reduced significantly by the layer isolation.

关 键 词：大底盘多塔楼 隔震结构 平扭耦联 多维地震 

分 类 号：TU352.12[建筑科学—结构工程]