基于ETABS结构分析软件的框架结构基础隔震分析

Analysis of Frame Structure Base-Isolation Based on ETABS

基于ETABS有限元分析程序,对某一框架结构进行了非隔震结构与基础隔震动响应分析研究。通过对框架结构固有特性进行分析比较,得出隔震结构能大大延长建筑结构的固有周期,降低固有频率,从而避开场地的特征周期和特征频率;分别采用反应谱分析、时程分析和能量分析三种方法对框架结构的动力特性进行分析比较,得出隔震结构的地震动响应与传统抗震结构相比有所降低,表明隔震结构起到了隔离地震的作用。

The traditional seismic structure and the base - isolation structure of frame structure are analyzed based on ETABS finite element analysis program of the building. Compared to the inherent characteristics, the inherent period is extended and the inherent frequency is reduced by adopting base-isolation structure; the seismic response of base - isolation structure is reduced by adopting spectrum analysis, time history analysis and energy analysis to analyze the dynamic characteristics of frame structure, thus, base - isolation structure has the function of isolating the effect of earthquake.