框架填充墙平面内抗震性能试验及数值模拟  

Experimental and numerical investigation on in-plane seismic performance of infilled frame

作　　者：钱凯[1,2] 吴頔 曾威 张敏 李治[2] QIAN Kai;WU Di;ZENG Wei;ZHANG Min;LI Zhi(College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;School of Civil and Architectural Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]广西大学土木建筑工程学院,南宁530004 [2]桂林理工大学土木建筑工程学院,桂林541004

出　　处：《建筑结构》2023年第16期63-72,97,共11页Building Structure

基　　金：国家自然科学基金项目(51778153);桂林理工大学科研启动基金资助(GUTQDJJ 2020176);广西自然科学基金项目(2018GXNSFAA050145)。

摘　　要：为研究开洞填充墙钢筋混凝土(RC)框架结构的抗震性能,设计了1/2缩尺的满砌框架填充墙、开洞填充墙和纯框架试件各1榀,对其进行低周往复拟静力加载试验。对比分析了试件的破坏现象、滞回性能、骨架曲线和耗能能力。通过有限元软件ANSYS/LS-DYNA建立精细化有限元模型,在验证有限元模型的基础上以填充墙开洞位置、框架柱横截面大小、砌体强度和层高作为拓展参数对RC框架填充墙进行深入研究。结果表明:相比于满砌框架填充墙,开洞填充墙可以提高结构初始刚度和极限承载能力;填充墙开洞后会改变试件的破坏模式,削弱结构极限承载能力,增加结构的变形能力。门洞位于墙体偏心位置时结构具有更高的抗倾覆能力;边柱截面增加显著提高结构的抗震性能;层高的增加加重了框架柱的损伤,降低了结构抗震性能。In order to study the seismic performance of reinforced concrete(RC)frame structures with cavity filling walls,three 1/2 scaled frames,including one bare frame,two infilled frames with or without openings were designed and tested under lowcycle reciprocating quasi-static loading.Test results include failure mode,hysteretic behavior,skeleton curve and energy dissipation capacity were analysed.Finite element model was established by finite element software ANSYS/LS-DYNA.High fidelity numerical mode was built to conduct extended studies on the effects of opening location,frame column section,masonry strength and story height.The results show that,compared with a full frame infilled wall,the infilled frame with openings can improve the initial stiffness and ultimate bearing capacity of the structure.After the filling wall is opened,the failure mode of the specimen will be changed,the ultimate bearing capacity of the structure will be weakened,and the deformation capacity of the structure will increase.The structure has higher anti-overturning ability when the door is located in the eccentric position of the wall.The increase of column section significantly improves the seismic performance of the structure.The increase of story height aggravates the damage of frame columns and reduces the seismic performance of the structure.

关 键 词：钢筋混凝土框架 开洞位置 抗震性能 框架填充墙 

分 类 号：TU375.4[建筑科学—结构工程]