双层带钢板暗支撑装配整体式混凝土剪力墙抗震性能研究  

Seismic performance of two-story monolithic precast concrete wall with concealed steel plate bracing

作　　者：刘泽龙[1] 汪梦甫[1] LIU Zelong;WANG Mengfu(College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《地震工程与工程振动》2024年第1期25-37,共13页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51578225,52078203)。

摘　　要：为研究带钢板暗支撑装配整体式混凝土剪力墙的抗震性能,设计制作1片双层带钢板暗支撑装配整体式混凝土剪力墙和1片双层带钢板暗支撑现浇混凝土剪力墙,其中装配整体式剪力墙内置钢板暗支撑在墙身与基础梁和上下墙身水平连接节点处采用双面角焊缝连接以适应施工时的安装尺寸冗余度要求。对试件进行低周反复加载试验,结果表明:采用双面角焊缝连接预制墙身内置钢板暗支撑可以适应较大的施工冗余度,并且保证暗支撑传力的可靠性;装配整体式剪力墙具有和现浇剪力墙等同的水平承载力、刚度退化水平和耗能能力;2个构件均为弯曲破坏,但装配整体式剪力墙在一层墙体后浇带与预制墙身接缝处也产生塑性铰。To investigate the seismic performance of the monolithic precast concrete wall with concealed steel plate bracing,a two-story monolithic precast concrete wall with concealed steel plate bracing and a benchmark two-story cast-in-situ wall with the same bracing were designed and constructed.The bracings in the precast wall were connected by welded joints at the wall-to-wall and wall-to-foundation connections to fit the larger construction tolerance.Cyclic loading tests were conducted on the walls.The results indicated that the bracings in the precast wall connected by welded joints were able to satisfy the large construction tolerance requirement and transfer the internal force well.The seismic performance of the monolithic precast concrete wall was emulative to the cast-in-situ wall in terms of the lateral strength,stiffness degradation,and energy dissipation.Both of the walls were failed in flexure,but the monolithic precast wall formed an additional plastic zone at the top interface of the post-casting segment.

关 键 词：装配整体式剪力墙 钢板暗支撑 低周反复加载试验 抗震性能 

分 类 号：TU352.1[建筑科学—结构工程]