纯剪荷载作用下帽型冷弯薄壁型钢屈曲约束钢板墙元的抗震性能试验研究  

Experimental study on seismic behavior of buckling-restrained steel plate shear wall panel element by cold-formed steel with hat-section under pure shear load

作　　者：王宇航[1,2] 古朝伟 唐琦 石宇[1,2] 张海宾[3] 叶露 WANG Yuhang;GU Chaowei;TANG Qi;SHI Yu;ZHANG Haibin;YE Lu(School of Civil Engineering,Chongqing University,Chongqing 400045,China;Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University),Ministry of Education,Chongqing 400045,China;Shandong Laigang Construction Co.,Ltd,Qingdao 266000,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]山地城镇建设与新技术教育部重点实验室(重庆大学),重庆400045 [3]山东莱钢建设有限公司,山东青岛266000

出　　处：《建筑结构学报》2020年第6期49-57,64,共10页Journal of Building Structures

基　　金：霍英东教育基金会青年教师基金(171066);重庆市技术创新与应用示范(社会民生类重点研发)项目(cstc2018jscxmszdX0099);重庆市自然科学基金重点项目(cstc2019jcyj-zdxm0088)。

摘　　要：提出了一种帽型冷弯薄壁型钢屈曲约束钢板剪力墙结构抗侧力体系。为了研究该帽型冷弯薄壁型钢屈曲约束钢板剪力墙结构的抗震性能,剥离了钢板剪力墙结构抗侧力体系中梁柱框架刚接对体系抗侧力的贡献,从钢板剪力墙中提取出"墙元",并保证其为纯剪受力状态,设计了5个帽型冷弯薄壁型钢屈曲约束钢板剪力墙墙元试件,对其进行往复剪切荷载下的拟静力试验。结果表明:帽型冷弯薄壁型钢屈曲约束钢板剪力墙结构承载能力稳定,位移延性系数达到7以上,极限位移角达0. 03rad,塑性变形能力较强;帽型冷弯薄壁型钢可以阻断内嵌钢板斜向通长拉力带,使钢板约束覆盖区域处于平面剪切受力变形状态,从而提升结构承载力、刚度和耗能能力,充分发挥钢板的材料性能;外贴OSB装饰板材可以满足建筑功能的适用性,同时强化了整体结构的抗震性能。Buckling-restrained steel plate shear wall with hat-section cold-formed steel is a new type of lateral resistant system. In order to study the seismic behavior of buckling-restrained steel plate shear wall by cold-formed steel with hat-section,the contribution of the beam-column rigid connection of frame in steel plate shear wall structure to the system lateral force resistance was removed,and the‘panel element’was extracted from steel plate shear wall to carry the pure shear load. Five specimens were designed for the quasi-static test under low-cycle reversed shear loads. The results indicate that the buckling-restrained steel plate shear wall with hat-section cold-formed steel has stable bearing capacity and strong plastic deformation behavior. The displacement ductility coefficient is above seven and the ultimate displacement angle is 0. 03 rad. The cold-formed steel with hat-section could block the inclined full-length tension band of the embedded steel plate to keep the covered area of steel plate staying in the state of in-plane shear deformation,which could improve the ultimate bearing capacity,stiffness and energy dissipation capacity of the structure and make good use of the material properties of steel plate. External OSB wallboard for decoration could meet the applicability requirement of building function,and strengthen the seismic behavior of the whole structure at the same time.

关 键 词：帽型冷弯薄壁型钢 钢板剪力墙 拟静力试验 塑性变形 耗能能力 

分 类 号：TU392.4[建筑科学—结构工程] TU317.1