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通过对钢板剪力墙外包混凝土盖板来提高钢板的抗屈曲能力,形成一种新型组合钢板剪力墙。为研究此种组合钢板剪力墙的抗震性能,在一榀组合钢板剪力墙低周循环加载试验的基础上,采用ANSYS软件建立非线性有限元模型,考虑影响结构抗震性能的5个主要因素:节点转动刚度、组合钢板剪力墙螺栓排布、内填钢板厚度、混凝土盖板数量及厚度,进行了5个系列15个有限元模型的变参数分析。结果表明:通过在钢板剪力墙单侧或双侧外包混凝土盖板可有效提升钢板的抗屈曲能力,增强结构的抗震性能;减少螺栓数量会提高结构的变形能力,但会降低结构的极限承载力和耗能能力;采用半刚性节点,合理设置内填钢板厚度和混凝土盖板厚度有利于结构抗震。
Through the steel plate shear wall outsourcing concrete cover to improve the anti-buckling capacity of steel to form a new type of combined steel plate shear wall. In order to study the seismic performance of this kind of composite shear wall, a finite element model of nonlinear finite element was established by ANSYS software on the basis of low cycle cyclic loading test of composite steel shear wall. Five main factors affecting the seismic performance of the structure were considered : Rotation stiffness of joint, bolt arrangement of combined steel plate shear wall, thickness of steel plate, number and thickness of concrete cover, variable parameter analysis of 15 series of 5 finite element models were carried out. The results show that the anti-buckling capacity of the steel plate can be effectively improved by covering the concrete cover with one side or both sides of the steel plate shear wall, and the seismic performance of the structure can be enhanced. Reducing the number of bolts will increase the deformation capacity of the structure but will reduce the ultimate bearing capacity of the structure Force and energy dissipation capacity. Using semi-rigid joints, the reasonable thickness of inner steel plate and concrete cover plate are beneficial to the structural seismic resistance.