框架剪力墙基础隔震结构地震易损性分析

基础隔震技术已广泛应用于实际工程中,因此,对这类结构展开易损性分析对深入了解基础隔震结构技术在地震作用下的响应具有重要意义。利用有限元软件SAP2000建立某12层框架剪力墙基础隔震结构,选取13条地震波,将每条地震波按照一定比例进行调幅,得到143个地震动样本空间,对结构进行非线性动力时程分析。通过对所得的损伤数据进行概率统计分析,绘制出基础隔震结构的地震易损性曲线。通过易损性曲线,得到了框架剪力墙基础隔震结构在不同地震作用下的破坏概率和破坏状态,从而对该类结构进行了易损性分析,为该类结构抗震性能评估提供依据。

Seismic Vulnerability Analysis of Base Isolation of Frame-wall Structure

The technology of base isolation has been widely used in practical engineering, therefore, a vulnerability analysis is of great significance to understand structure of this kind of base isolation structure technology under the action of earthquake response. The base isolation structure of a 12-layer frame-wall structure is established based on the finite element software SAP2000, Thirteen seismic waves were selected, and each seismic wave was modulated with the step length method, Then we got 143 geoseismic samples of earthquake, and the nonlinear dynamic time analysis of the structure was carried out. The seismic fragility curve of the base isolated structure is drawn by the probability statistics analysis of the damage data. And the failure probability and damage state of the base isolation structure of the frame-wall were obtained through the vulnerability curve, accordingly, Thus the vulnerability of the structure can be evaluated and analyzed. Therefore, it can provide the basis for the seismic performance evaluation of such structures.