不同构造双钢板组合剪力墙抗震性能试验研究  

Experimental study on seismic performance of composite shear walls with double steel plates under different constructions

作　　者：曹万林[1] 于传鹏[1] 董宏英[1] 乔崎云[1] 韩丽[1] 张勇波[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《建筑结构学报》2013年第S1期186-191,共6页Journal of Building Structures

基　　金：国家自然科学基金项目(51178010);北京市教委科技计划重点项目(KZ200910005008)

摘　　要：对6种不同构造工形截面双钢板组合剪力墙进行低周反复荷载试验研究。试件翼缘均为等厚双钢板三腔扁钢管墙体,按腹板双钢板厚度不同分为2组,每组中腹板设两腔体试件1个、三腔体试件1个、三腔体且底部加强型试件1个。试件按1/5缩尺,剪跨比为1.5。分析了各试件的破坏特征、承载力、延性、耗能、刚度退化过程。结果表明:反复荷载作用下,工形截面双钢板剪力墙腹板双钢板形成按腔体分隔的交叉抗剪拉力条带,翼缘和腹板均发挥了良好的延性耗能能力,抗震耗能能力较强;双钢板厚度、腔体个数、底部加强构造措施对剪力墙抗震性能有明显影响,通过合理设计这些参数,采取有效构造措施,来匹配翼缘与腹板强弱关系,是同时充分发挥双钢板剪力墙抗剪和抗弯耗能性能、实现延性屈服机制的关键。Experiments on six different I-section composite shear walls with double steel plates were carried out under cyclic loading.The flanges of all specimens were equal thickness double plate three-opening rectangular steel tubular walls.Specimens were divided into two groups according to the thickness of double steel plates: each group combines one specimen with two web openings,one specimen with three web openings and one bottom strengthened specimen with three web openings.Each specimen adopts the scale of 1 /5 and the shear span ratio of 1.5.The failure characteristics,load-bearing capacity,ductility,energy dissipation capacity and stiffness degradation process of the specimens were analyzed.Test results show that the flange of I-section composite shear walls with double steel plates forms inclined tension strips divided by the opening under cyclic loads.The flange and the web show a good ductility capacity and seismic behavior.The steel plate thickness,numbers of the opening and the bottom strengthening construction measures have obvious effects on the seismic behavior of the wall.Matching the strengths of the flanges and the web by designing those parameters properly and adopting the effective construction measures are the key measures to make sure that the bending and shear performance of the shear wall can be reached simultaneously,as well as the ductility yielding mechanism.

关 键 词：双钢板剪力墙 工形截面 拟静力试验 抗震性能 屈服机制 

分 类 号：TU392.4[建筑科学—结构工程] TU352.11