双肢型钢混凝土短肢剪力墙抗震性能试验及数值模拟  

Seismic performance test and numerical simulation of coupled SRC short-leg shear walls

作　　者：柯晓军[1,2] 苏益声[1,2] 王晓燕 KE Xiaojun;SU Yisheng;WANG Xiaoyan(Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Disaster Prevention and Engineering Safety,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院工程防灾与结构安全教育部重点实验室,南宁530004 [2]广西大学广西防灾减灾与工程安全重点实验室,南宁530004

出　　处：《建筑结构》2021年第14期69-74,共6页Building Structure

基　　金：国家自然科学基金项目(51668007);广西自然科学基金项目(2018GXNSFAA050007)。

摘　　要：通过一榀双肢实腹式型钢混凝土短肢剪力墙模型试件的低周反复荷载试验,揭示该类双肢墙的破坏机制及抗震性能。试验结果表明:试件从型钢混凝土连梁屈服形成塑性铰,再到墙肢屈服发生破坏;试件延性系数、等效黏滞阻尼系数分别为3.58和0.191,表明该类双肢墙结构的破坏表现为强墙肢弱连梁型,具有较好的抗震性能。考虑到连梁破坏时只有少许黏结裂缝,兼顾双肢墙结构计算效率,有限元建模时不考虑型钢界面黏结滑移影响,计算结果可满足工程要求。采用型钢混凝土梁连接的型钢混凝土短肢剪力墙抗震性能要优于钢筋混凝土梁。To reveal the failure mechanism and seismic performance of coupled SRC short-leg shear walls,the quasi-static test was conducted for one model specimen of coupled solid-web steel concrete short-leg shear wall.Test results indicate that the specimen forms plastic hinges from steel-concrete coupling beams to yield,and then the wall legs yield to fail;the ductility coefficient and equivalent viscous damping coefficient of the specimen are 3.58 and 0.191,respectively,indicating that the failure of this type of coupled shear wall structure is a strong-wall-weak-coupling-beam type,with good seismic performance.Considering that there are only a few cohesive cracks when the coupling beam fails,and the calculation efficiency of the coupled shear wall structure is taken into account,the finite element modelling does not consider the effect of the bond-slip of the section steel interface,and the calculation results can meet the engineering requirements.The seismic performance of the short-leg shear wall connected by SRC beams is better than that of reinforced concrete beams.

关 键 词：双肢墙 短肢剪力墙 型钢混凝土 强墙肢弱连梁 抗震性能 拟静力试验 

分 类 号：TU398.[建筑科学—结构工程]