基于IDA方法的RC框架-摇摆结构地震易损性分析  

Seismic Susceptibility Analysis of RC Frame-sway Structures Based on IDA Approach

作　　者：征存华 ZHENG Cunhua(Suzhou University of Science and Technology)

机构地区：[1]苏州科技大学

出　　处：《广东建材》2025年第3期79-82,共4页Guangdong Building Materials

摘　　要：本文采用Opensees有限元软件,根据场地条件类型选取14条不同的地震波,对框架进行附加摇摆子结构的加固。基于增量动力分析方法(IDA)对加固后的RC框架进行地震易损性分析。选取地震动强度参数(PGA)绘制地震易损性曲线。结果表明:以PGA作为地震动强度指标绘制的IDA曲线离散性较小;随着PGA的增加,IDA曲线的斜率逐渐降低。分析框架-摇摆结构的地震易损性可以为地震灾害评估及抗震加固提供依据。In this paper,the frame was strengthened with additional sway substructure using Opensees finite element software with 14 different seismic waves selected according to the type of site conditions.The seismic susceptibility of the strengthened RC frame was analyzed based on the Incremental Dynamic Analysis(IDA)method.The seismic susceptibility curves were plotted by selecting the ground shaking intensity parameter(PGA).The results show that the dispersion of the IDA curves plotted with PGA as the ground shaking intensity index is small;the slope of the IDA curves decreases gradually with the increase of PGA.Analyzing the seismic vulnerability of frame-sway structures can provide a basis for seismic hazard assessment and seismic strengthening.

关 键 词：摇摆结构 结构抗震 易损性分析 增量动力分析 

分 类 号：TU375.4[建筑科学—结构工程] TU312.3