钢框架-冷弯薄壁型钢剪力墙结构抗震性能试验研究  

Experimental Study on Seismic Performance of Steel Frame with Cold-Formed Thin-Walled Steel Shear Wall Structure

作　　者：张铮 陈笃海 江忠画 张其林[2] ZHANG Zheng;CHEN Duhai;JIANG Zhonghua;ZHANG Qilin(School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]福建工程学院土木工程学院,福州350118 [2]同济大学土木工程学院,上海200092

出　　处：《建筑钢结构进展》2022年第6期11-19,共9页Progress in Steel Building Structures

基　　金：国家自然科学基金(51678152);福州市科技计划项目(2018-G-56)。

摘　　要：对钢框架-冷弯薄壁型钢剪力墙结构足尺试件进行水平低周往复加载试验,得到延性、耗能能力、刚度及承载力等指标,考察该类结构的破坏模式和耗能机理。对有无钢框架约束的冷弯薄壁型钢墙体进行比较,发现受钢框架四周约束的冷弯薄壁型钢墙体整体性增强,塑性性能得到改善,杆件材料利用率增加,可以充分发挥剪力墙的作用。钢框架-冷弯薄壁型钢剪力墙结构滞回曲线饱满、下降段承载力只略有降低,与钢框架-钢板剪力墙结构表现类似,优于与框架柱未连接的情况。试验结果表明,冷弯薄壁型钢剪力墙利用自身变形来充分发挥耗能作用,与钢框架之间耦合效应显著,整体侧向刚度大,延性系数达3.33,具有良好稳定的抗震性能。Through the experiment of the full-scale specimen of steel frame with cold-formed thin-walled steel shear wall structure under low-cycle lateral loading,the ductility,energy dissipation capacity,stiffness,and load-carrying capacity are obtained,and the failure mode and energy dissipation mechanism are investigated.When cold-formed thin-walled steel walls with or without steel frame constraints are compared,it is found that the cold-formed thinwalled steel wall restrained all around the steel frame has enhanced integrity,improved plastic properties,and increased utilization of members material,allowing the shear wall to play its full role.The hysteretic curve of a steel frame with a cold-formed thin-walled steel shear wall structure is full,and the load-carrying capacity of descending section is slightly reduced,which is similar to that of a steel frame with a steel plate shear wall structure and is better than that of steel frame with cold-formed thin-walled steel shear wall structure without connection with frame column.The results of the tests reveal that the cold-formed thin-walled steel shear wall completely utilizes its deformation to maximize the energy dissipation effect.The shear wall and steel frame have a considerable coupling effect,the total lateral stiffness is high,and the ductility coefficient approaches 3.33,indicating good and stable seismic performance.

关 键 词：钢框架-冷弯薄壁型钢剪力墙结构 抗震性能 四周约束 耦合效应 延性系数 耗能机理 

分 类 号：TU352.1[建筑科学—结构工程] TU392.1