摘要
利用有限元软件SAP 2000建立钢板剪力墙结构单元的计算模型：钢框架采用梁单元模拟;选择拉杆单元模拟内填钢板;梁柱刚接,与内填板嵌固;整体下端固定,上端自由。建立简化模型,根据不同的柱子轴压比,分析柱子对钢板的竖向支撑作用和整体的刚度退化情况。框架-剪力墙作为双侧抗侧力体系,相当于两道抗震设防措施,既要发挥好墙板的耗能作用,也得发挥好框架柱的抗侧能力,所以结构的抗侧刚度起到主要作用。计算结果表明：钢板剪力墙的高厚比为250~300,宽高比为1时,其初始刚度与结构总的初始刚度的比值为85%~90%较好。
A finite element model of the steel plate shear wall structure elements was established by using the finite element software SAP 2000. This FEM used beam elements for steel frame,and selected tie-bar elements to simulate filled steel plate. Beam-to-column rigid connection was adopted to embed filled panels,the lower part was fixed and upper part was freedom. A simplified model was established based on different axial compression ratio so as to analyze the influence of column on the vertical bracing effect and overall stiffness degradation of steel plates. Frame- shear wall structure was the equivalent of two earthquake-proof measures as bilateral lateral force resisting system,which played important roles of wallboard energy dissipation and frame-column resisting lateral deformation capability. The resisting lateral stiffness of structure was crucial. The computed results showed that when the height-thickness ratio was 250 ~ 300 as well as the widthheight ratio was 1,the initial stiffness of steel plate shear wall accounted for about 85% ~ 90% of overall initial stiffness was better.
出处
《钢结构》
北大核心
2016年第1期36-38,共3页
Steel Construction
