摘要
增量动力分析(IDA)方法是一种基于弹塑性时程分析结果的参数分析方法,能反映出结构在强震下的动态特性、结构的极限变形能力等抗震性能,但目前对于增量动力分析法的地震波选取还没有明确的规定。本文选取特征周期与建筑场地卓越周期接近的地震记录,以一栋4层钢筋混凝土框架结构为例,通过增量动力分析法,分析地震动记录选取对IDA曲线结果的影响,表明增量动力分析时有必要合理的选取地震动记录,可以减小IDA分析结果的离散性。
Incremental dynamic analysis （IDA） is a parametric analysis method based on the results of elasto-plastic dynamic analysis. It can be used to analyses the structural behavior under different performance levels. But the selection of seismic recordings of incremental dynamic analysis has not been clearly defined. In this paper, the method of seismic recordings requires the characteristic period of seismic recordings close to the predominant period of construction site, anglicizing the influence of selection of seismic recordings on the results of incremental dynamic analysis. A 4-story RC frame structure is taken as the example in this paper. Study on incremental dynamic analysis. It is given the influence of selection of seismic recordings to the results of IDA curve. It indicates that a necessary and reasonable selection of seismic recordings can reduce the discreteness of the results of IDA.
出处
《四川建筑科学研究》
2012年第6期151-155,共5页
Sichuan Building Science
基金
住房与城乡建设部科学技术计划项目(2010-K3-48)
关键词
地震动记录
增量动力方法
特征周期
seismic recordings
incremental dynamic analysis
characteristic period
