（1内蒙古建筑职业技术学院，呼和浩特 010070；2城市建设研究院）

[摘要] 基于动力增量时程分析法的结构易损性分析是基于性能抗震设计的重要内容。本文重点分析了不同抗震设防烈度下三层RC框架结构遭受地震动破坏时的情况，统计得出了相应的破坏概率矩阵与结构易损性曲线；建立了设防烈度与破坏概率之间的关系，为设计人员确定结构抗震性能水准提供了数据支持。

[关键词] 易损性；增量动力分析法；框架结构

中图分类号：TU375

作者简介：贾秀英，？

Analysis on structural seismic vulnerability of RC frames with different seismic fortification levels

Jia Xiuying， Yang Yanqi

（1 IMTCC，Hohehot 010070，China；2 ？）

Abstracts：Seismic vulnerability analysis based on IDA is the most important content of performance-based seismic design. A three-storey frame structure designed under different seismic fortification intensity were analyzed when Subjected to seismic damage in this paper, the statistics show that the corresponding destruction probability matrix and structural vulnerability curve; The relationship fortification intensity and failure probability were founded, and it can give the designers support data when determining the structural seismic performance level .

Keywords：vulnerability；IDA；frame structure

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