橡胶隔震结构在各种地震作用下的隔震效果  

Analysis About Isolation Effect For Rubber Bearing Under the Action of Earthquake

作　　者：曹雅迪 王兴国[1] 葛楠[1] 

机构地区：[1]河北联合大学河北省地震工程研究中心,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2015年第1期112-116,共5页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：国家自然科学基金项目(51378170);河北省科技支撑项目(11215120D)

摘　　要：根据拉格朗日方程推导了框架结构采用橡胶支座隔震的动力反应分析计算公式,根据龙格-库塔法利用MTALAB语言编制程序求解。结构设置橡胶隔震支座具有明显的隔震效果,能大幅减少结构地震动力反应的层间位移。隔震效果与等效刚度系数kr、等效阻尼系数cr有关,二者合理组合可得到很好的隔震效果。当kr=95 000kN/m,cr=20 000kN/ms,隔震效果最佳。According to Lagrange equation in dynamics the motion equation of the frame with rubber bear-ing isolation was established.Its solution was approched with MTALAB language programming.The cal-culation results show that the structural setting rubber bearings has obvious effect of isolation,and the seismic isolation system can significantly reduce the seismic dynamic response of inter-story drift.Effect of isolation is relevant of the equivalent stiffness coefficient kr and the equivalent damping coefficient cr.An optimistic combination of them could exhibit good seismic isolation efficiency.It could reach best combina-tion for kr=95000kN/m,cr=2000kN/m·s.

关 键 词：橡胶支座隔震 LAGRANGE方程 地震波 龙格-库塔方法 

分 类 号：TU973.31[建筑科学—结构工程]