多层装配式预制剪力墙抗震性能试验研究  

Experimental study on seismic performance of multi-story prefabricated shear wall

作　　者：肖明 韩文龙[1] 吕晚晴 王赞 李薇 李利民 XIAO Ming;HAN Wenlong;LÜWanqing;WANG Zan;LI Wei;LI Limin(China Institute of Building Standard Design&Research,Beijing 100048,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国建筑标准设计研究院有限公司,北京100048 [2]清华大学土木工程系,北京100084

出　　处：《建筑结构学报》2023年第12期32-45,共14页Journal of Building Structures

摘　　要：研究了一种竖向接缝采用钢筋锚环或钢丝绳套连接、水平接缝采用单排大直径钢筋间接搭接的多层装配式预制剪力墙,为校验接缝构造的可靠性、明确该类结构墙板的抗震性能,开展了8个预制剪力墙与1个现浇剪力墙的拟静力试验,并对其破坏形态、全过程受力机理及重要参数影响规律等进行分析。结果表明:各剪力墙均实现了预期破坏形态,变形基本满足平截面假定,具有良好的整体性;压弯破坏一字形剪力墙与工字形剪力墙的受弯承载力与剪切破坏一字形剪力墙的受剪承载力分别为对应现浇剪力墙规范计算值的1.23~1.25倍、1.01~1.07倍和1.69~1.81倍,满足承载力要求;压弯破坏剪力墙和剪切破坏剪力墙的极限位移角分别为1/53~1/34和1/62~1/61,满足罕遇地震下结构弹塑性层间位移角的变形要求;水平接缝采用附加大直径钢筋间接搭接连接可实现与钢筋上下贯通相近的承载力与耗能能力,钢筋替代原则可行;竖向接缝具有较好的抗剪能力,在发生少量滑移后对剪力墙水平承载力的削弱程度有限,相同条件下,考虑钢筋锚环的销栓作用对剪力墙刚度与耗能能力的有利作用,建议优先采用钢筋锚环的连接方式。A novel multi-story prefabricated shear wall structure was investigated,in which reinforcement anchor rings or steel wire rope sleeve was used for the vertical joint connection,while the vertical rebar was connected by noncontact lapping using a single row of larger diameter rebar.To investigate the feasibility and the seismic behavior of the wall,quasi-static experiments were conducted on a total of eight prefabricated shear wall specimens and one cast-in-situ shear wall,and the failure mode,full-range behavior and influence pattern of key parameters were analyzed.The results show that all specimens exhibit the expected failure mode,demonstrating satisfactory overall integrity.The measured flexural bearing capacity of I-shaped and H-shaped compression bending failure specimens and shear bearing capacity of I-shaped shear failure specimens were 1.23-1.25,1.01-1.07 and 1.69-1.81 times of the calculated value achieved from JGJ 3—2010 using formulas for cast-in-situ shear walls,respectively.The ultimate displacement angles of the compression bending failure and shear failure specimens were 1/53-1/34 and 1/62-1/61 respectively.The noncontact lapping connection for horizontal joints achieves satisfactory bearing capacity and energy dissipation capacity.The vertical joint demonstrates sufficient shear resistance,with limits weakening of the horizontal bearing capacity of the specimen after a small amount of slip occurs.For the vertical joint,considering the dowel action,the use of reinforcement anchor rings is recommended.

关 键 词：多层装配式剪力墙结构 接缝构造 钢筋连接 拟静力试验 抗震性能 

分 类 号：TU398.203[建筑科学—结构工程]