不等高开缝钢板剪力墙屈曲分析  

BUCKLING ANALYSIS OF STEEL PLATE SHEAR WALL WITH UNEQUAL-LENGTH SLITS

作　　者：谯旭东 侯兆新[3,4] 陆金钰[1,2] 陈水荣[3,4] 唐屹[1] 舒赣平[1,2] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]东南大学混凝土与预应力混凝土教育部重点实验室,南京210096 [3]中冶建筑研究总院有限公司,北京100088 [4]国家钢结构工程技术研究中心,北京100088

出　　处：《钢结构》2016年第3期21-25,共5页Steel Construction

基　　金："十二五"国家科技支撑计划项目(2012BAJ13B014)

摘　　要：开缝钢板剪力墙具有延性好、耗能性能稳定以及能削弱拉力带效应等优点。剪力墙中开设的竖缝将整个内嵌钢板分割成若干条竖向墙肢,使开缝钢板剪力墙主要通过墙肢的面内弯曲,在墙肢两端形成塑性铰耗能。针对两种不等高类型开缝钢板剪力墙进行屈曲分析,考察开缝斜率对钢板剪力墙屈曲性能的影响。分析结果表明,相对于缝高斜率为零的等高开缝钢板剪力墙,不等高开缝钢板剪力墙的抗侧刚度和极限承载力得到显著提高。"梭型"开缝试件边缘墙肢应力较为集中。"蝶型"开缝试件应力分布较为均匀,特别是缝高斜率为0.39的试件,墙肢几乎同时屈服,能较好发挥中间墙肢耗能性能。Steel plate shear wall with slits has advantages of excellent ductility and stable energy dissipation performance,it can also reduce the tension field effect. The vertical slits of shear wall divided the infill steel plate into a number of vertical flexural link,which are bending in the plane. Both ends of flexural link form a series of plastic hinges to absorb energy. This paper presented two kinds of steel plate shear wall with unequal-length slits and studied the influence of slope of slits＇ length on the buckling performance of steel plate shear wall. The results showed that the lateral stiffness and ultimate bearing capacity of steel plate shear wall with unequal-length slits were higher than the specimens with equal-length slits obviously. Marginal flexural links of shear wall with fusiform shaped slits appeared stress concentration. The stress distributed evenly in the specimens with butterfly shaped slits,especially for the specimen whose slit slope was 0. 39,all of the flexural links yielded at the same time,which could make full use of the energy dissipation capacity flexural links in the middle.

关 键 词：不等高开缝 钢板剪力墙 屈曲 缝高斜率 

分 类 号：TU392.4[建筑科学—结构工程]