摘要
填充墙框架结构是普遍存在的结构形式,在结构抗震性能分析中填充墙倒塌以及结构整体的抗倒塌能力是需要研究的首要问题。本文介绍了可模拟填充墙平面内外相互作用的五撑杆模型,利用试验结果验证所使用的五撑杆模型模拟填充墙是有效的,最后基于校准后的数值分析模型,利用OpenSees软件,分别考虑双向地震动与单向地震动情况下,对某钢筋混凝土填充墙框架结构建立三维空间模型,分别进行动力分析。对比分析两种情况下填充墙倒塌数量、柱端纵筋应变以及结构层间位移角之间的差异。分析结果表明考虑单向地震动会低估填充墙结构在经历地震动时的损失,高估了结构的抗倒塌能力。
The infilled frame structure is one of the most widely used structural forms.In the seismic performance analysis of the structure,the first questions to be studied are the collapse of the infilled wall and the overall collapse resistance of the structure.Firstly,we set up the five-brace model that can simulate the in-plane and out-of-plane interactions of the infilled wall and verified its effectiveness in simulating the infilled wall by the tests of other scholars.Secondly,based on the calibrated numerical analysis model,we established the three-dimensional space models of the reinforced concrete infilled wall frame structure under bidirectional and unidirectional ground motions respectively by using OpenSees software,and carried out their dynamic analyses.Finally,we compared and analyzed the differences of the number of collapsed infilled walls,the strain of longitudinal reinforcement at the end of column and the inter-story displacement angle under two conditions.The results show that when the structure under unidirectional ground motion,the loss of the infilled wall structure will be underestimated,and the collapse resistance of the structure will be overestimated.
作者
崔亮
孔璟常
曲淑英
CUI Liang;KONG Jingchang;QU Shuying(School of Civil Engineering,Yantai University,Yantai 264005,China)
出处
《防灾科技学院学报》
2022年第1期13-22,共10页
Journal of Institute of Disaster Prevention
基金
中国地震局工程力学研究所基本科研业务费专项资助项目(2018D15)
国家自然科学基金项目(51808478)
山东省自然科学基金项目(ZR2019QEE033)。
