基于非弹性位移响应谱值的框架结构易损性分析

Vulnerability analysis of frame structure based on inelastic displacement response spectrum

为研究基于非弹性位移响应谱的框架结构易损性问题,通过有限元软件建立6个不同周期的钢筋混凝土框架模型,提出了框架结构损伤的4个极限状态的量化指标,采用IDA分析方法得到框架结构的易损性曲线;采用反应谱方法得到地震危险性曲线,进而得到框架结构抗震倒塌安全储备系数。本研究结果为今后评估框架结构的易损性问题提供参考。

In order to study the vulnerability of the frame structure based on the inelastic displacement response spectrum,six different periods of reinforced concrete frame model are established by finite element software. Then propose four limit states quantization index of evaluating frame structure damage. The fragility curves of frame structure were obtained by IDA analysis method;Seismic hazard curves were obtained by using the response spectrum method,and then get the frame structure seismic collapse safety reserve coefficient. The results provide a reference for the future evaluation of the vulnerability of the framework structure.