防灾减灾工程学报2017，Vol.37Issue(3)：348-353,6.DOI:10.13409/j.cnki.jdpme.2017.03.003
基于OpenSees的不规则三维RC框架结构弹塑性分析
Elastic-plastic Pushover Analysis of 3D Irregular RC Frame Structure Based on OpenSees
摘要
Abstract
Establishing an eight-storey three-dimensional RC frame structure with irregular local plane by finite element analysis software OpenSees,obtaining structure's performance point vertex displacement and base shear under frequent,design and rare earthquake by Pushover analysis in the horizontal direction using uniform,nabla,parabola and first vibration mode load patterns.Then we choose two cross for Pushover analysis in two-dimensional model and compare the results with the analysis of three-dimensional model in respect of floor displacement and story drift angle.Analytical results show that uniform loading mode is not applicable for its large deviation;the nabla loading mode is proved to have well applicability in Pushover analysis of three-dimensional model.The target displacement of two-dimensional model is smaller,also the difference will be increased by the intensity of earthquake.Three-dimensional model can better reflect the locations of structural weak layer,and simplified plan analysis is unsafe.关键词
OpenSees/三维模型/不规则RC框架/Pushover分析/抗震性能Key words
OpenSees/3D models/irregular RC frame structure/Pushover analysis/seismic performance分类
建筑与水利引用本文复制引用
张望喜,肖龙杰,谭泽腾,李琛骏..基于OpenSees的不规则三维RC框架结构弹塑性分析[J].防灾减灾工程学报,2017,37(3):348-353,6.基金项目
国家自然科学基金项目(51578228)、国家重点研发计划专项(2016YFC0701400)资助 （51578228）
