三重摩擦摆非对称框架结构的动力响应分析  

Dynamic Response Analysis of Asymmetric Frame Structures with Triple Friction Pendulum Isolation

作　　者：李晓东[1] 张家源[1] 张凯[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730000

出　　处：《工程抗震与加固改造》2016年第6期89-95,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家创新基金项目(11C26216206242);甘肃省自然科学基金项目(1104ZSB083)

摘　　要：借助ANSYS软件分别模拟单摆和三摆隔震支座,通过提取滞回曲线得出三摆隔震支座的特点;然后根据非对称框架结构的自身特点,通过采用数值模拟对非对称结构设置三重摩擦摆新型隔震支座对在8度罕遇地震作用下的响应,根据上部荷载不同设置不同参数的三重摩擦摆隔震层,对其隔震效果进行分析比较。计算结果显示,采用三重摩擦摆隔震可使上部结构的地震反应显著减小。通过合理设置三重摩擦摆的关键参数,对隔震层和上部结构的位移进行调整,可实现对隔震层的水平位移、扭转振动以及平-扭耦联作用有效的控制,保证底层柱受力合理。With the use of ANSYS software,the friction pendulum bearing models and triple friction pendulum bearing models are built.The characteristics of the isolation bearing are derived by extracting the hysteresis curve. Based on the characteristics of asymmetric frame structure,the response of asymmetric structure with triple friction pendulum isolation bearing is simulated under 8 degrees severe earthquake. The different parameters of triple friction pendulum isolation layer are set according to the different upper load,the isolation effects are analyzed and compared. The results show that the triple friction pendulum isolators can reduce the seismic responses of the upper structure significantly. By setting the reasonable parameters of triple friction pendulum,and adjusting the displacement of isolation layer and the upper structure,and the torsional vibration and lateral-torsional coupled seismic response can be controlled. Moreover the isolators ensure that the underlying column force is in a suitable range.

关 键 词：三重摩擦摆 非对称框架结构 隔震结构 扭转效应 

分 类 号：TU352.12[建筑科学—结构工程] TU311.3