摘要
增量动力分析法即对于一条特定的地震动输入,设定一系列单调递增的地震动强度;在每个地震动强度下进行结构的弹塑性时程分析,得到不同地震动强度与结构性能参数之间的关系;通过统计分析不同地震动下的结构性能参数与地震动强度之间的关系,来实现对结构性能的评估.增量动力分析法也可以看成是一种动力推覆分析法.详细介绍了增量动力分析法的计算内容和分析步骤,并将该方法运用于评估某高层混合结构的抗震性能.评估结果既可为高层混合结构基于性能抗震设计提供参考,也为增量动力分析在复杂高层结构中的应用提供基础.
In the incremental dynamic analysis （IDA）, the intensity of one single ground motion is increasingly set according to a series of intensity measures（IMs）. The elastoplastic dynamic analysis of the structure under different IMs is then carried out to obtain the relationship between the structural damage measure （DM） and ground motion IM. When considering a set of ground motions, the analysis of DMIM curves can be applied to the evaluation of the structural performance. IDA is thus seen as the so-called ＂dynamic pushover analysis＂. The paper presents an introduction of the method of IDA and its application to a hybrid structure. The analytical process and results are helpful for the performancebased seismic design of hybrid structures and a wideapplication of IDA in complex structures.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第2期183-187,193,共6页
Journal of Tongji University:Natural Science
基金
国家"九七三"重点基础研究发展规划资助项目(2007CB714202)
国家自然科学基金资助项目(50708071
90815029)
上海市晨光计划资助项目(2007CG27)
