某高层隔震建筑地震响应分析

利用Etabs软件,对某高层隔震建筑进行非线性时程分析。时程分析表明:在8度(0.3g)中震作用下,隔震结构与非隔震结构相比,隔震层以上最大减震系数为0.34,减震效果明显;在8度(0.3g)罕遇地震下,隔震结构整体抗倾覆验算满足要求;在罕遇地震作用下,隔震层发生较大变形,隔震层以上楼层层间位移很小,上部结构呈现平动。

Seismic Response Analysis of an Isolated Tall Building

The nonlinear time history analysis of a isolated tall building was carried out with Etabs.Time history analysis showed that the maximum of discount rates on the superstructure of the isolated structure was 0.34 under medium earthquake of 8 degree(0.3g) and damping coefficient was obvious compared to the non-isolated structure.Calculation of stability against overturning under the rare earthquake of 8degree(0.3g) was taken and met the requirement.Under the rare earthquake,story displacement of isolation layer was great and story displacement on the superstructure was small,which show that the drift of superstructure take on translational motion.