（苏州科技大学土木工程学院，苏州 215011）

［摘要］以RC框架结构为研究对象，对其进行基于3种DM的IDA分析。采用SAP2000有限元软件进行大量的弹塑性时程分析，得到了相关指标的IDA曲线簇以及结构各层和整体的IDA曲线，以此对倒塌判定准则进行评估。结果表明：DM分别为残余层间位移角θr、最大层间位移角θmax和层间位移角θ的IDA方法中，DM为残余层间位移角的IDA方法对结构倒塌的判定更偏于保守。

［关键词］RC框架结构； 残余层间位移角； 层间位移角； SAP2000； 逐步增量动力分析

中图分类号：TU375-4文献标识码：A文章编号：1002848X(2018)03-0106-04

Evaluation of collision judgment criterion of RC frame structure based on IDA method

Yang Kun, Tian Shizhu, Zhang Cheng

(School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China)

Abstract:The RC framework was taken as the research object, and IDA analysis based on three kinds of DM was carried out. The related indicators of IDA curves, the structural layers and the whole IDA curves were obtained through the research of plenty of elastic-plastic time history analyses by the finite element software SAP2000 and the collapse criterion was evaluated. The results show that among the three IDA methods including taking DM as the residual interlayer displacement angle (θr), the maximum interlayer displacement angle (θmax) and the interlayer displacement angle (θ), the IDA method of taking DM as the residual interlayer displacement angle to judge collapse of the structure is more conservative.

Keywords:RC frame structure; residual interlayer displacement angle; interlayer displacement angle; SAP2000; IDA

作者简介：杨坤，硕士研究生， Email:1563272327@qq.com。