两边连接屈曲约束钢板剪力墙受力机理与等效支撑模型  

Stressing mechanism and equivalent brace model for buckling restrained steel plate shear wall with two-sided connections

作　　者：李国强[1,2] 刘文洋[2,3] 陆烨[2] 孙飞飞[1,2] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]同济大学土木工程学院,上海200092 [3]黑龙江八一农垦大学工程学院,黑龙江大庆163319

出　　处：《建筑结构学报》2015年第4期33-41,共9页Journal of Building Structures

基　　金："十二五"国家科技支撑计划(2012BAJ13B02)

摘　　要：采用理论分析和有限元方法,针对两边连接屈曲约束钢板剪力墙的受力机理和传力规律进行研究。提出了钢板墙边缘约束区的概念并确定了边缘约束区的宽度,分析了钢板墙的屈服形状、钢板墙内各部分应力流的分布规律和钢板墙与梁连接处的受力特点等。在此基础上提出了两边连接屈曲约束钢板剪力墙等效支撑模型,对不同尺寸、不同层数的框架-屈曲约束钢板剪力墙结构和框架-等效支撑结构在水平荷载作用下的力学性能进行分析,并对两种结构的荷载-位移曲线进行了对比。分析表明,所提出的等效支撑模型在结构刚度和承载力方面具有较好的准确性,无论是单调加载还是反复加载均能准确地模拟两边连接屈曲约束钢板剪力墙结构的受力行为。By using theoretical analysis and finite element method,the stressing mechanism and force transferring law of buckling restrained steel plate shear wall with two-sided connections has been studied,including the concept of boundary region and its width,the shape of yielding region,the distribution law of principal stress line and the forces between beam and steel plate shear wall. Based on that,the equivalent brace model for buckling restrained steel plate shear wall with two-sided connections was presented. Then framed buckling restrained steel plate shear wall and framed equivalent brace structures with different size and stories were analyzed. Comparison of load versus displacement curve indicates that the stiffness and capacity of equivalent brace is equal to buckling restrained steel plate shear wall. The loading behavior of buckling restrained steel plate shear wall can be simulated accurately by presented equivalent brace model under both monotonic and cyclic loading.

关 键 词：屈曲约束钢板剪力墙 两边连接 受力机理 边缘约束区 等效支撑模型 

分 类 号：TU398.2[建筑科学—结构工程]