【摘要】 提出了钢管混凝土边框内藏钢板-钢撑组合剪力墙。为研究这种新型组合剪力墙的抗剪性能,在已有相关低矮剪力墙抗震性能试验基础上,进行了2个新的不同构造低矮剪力墙模型低周反复荷载试验。比较分析了两个试件的滞回特性、承载力、刚度、耗能和破坏特征,提出了抗剪承载力计算公式,计算与实测符合较好。研究表明:钢管混凝土边框,对墙体主斜裂缝发展有明显约束作用;不同构造剪力墙,墙体裂缝开展与损伤过程有明显差异;边框、钢板-钢撑和墙体的设计参数应合理匹配,以提高剪力墙的延性和抗震耗能能力。更多还原

【Abstract】 A composite shear wall with concrete filled steel tube CFST boundary columns and concealed steel platesteel braces was proposed. Based on relative existing low- rise shear wall tests,two wall models with different constructions were tested under the cyclic loading so as to investigate the shear behavior of the new wall. The hysteretic property,load- bearing capacity,stiffness,energy dissipation capacity and failure modes of models are compared and analyzed. The mechanical model for calculating load- bearing capacity of the wall was proposed and the calculated results agree well with the measured values. Research shows that: the CFST boundary columns has the obvious restriction on the main diagonal crack developing of the wall; the crack and the damage process on the wall are significantly different for different models; the parameters of CFST boundary columns,steel plate- steel braces and the wall should be reasonably designed so as to improve the ductility and energy dissipation capacity of shear walls.更多还原