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为研究悬臂梁段拼接节点对带填充墙钢框架的抗震性能影响,进行了一榀1/2缩尺带砌体填充墙的悬臂梁拼接钢框架的拟静力试验,并进行了ANSYS有限元验证及参数分析。对结构的全阶段加载的破坏模式、应变变化、滞回曲线、位移延性、骨架曲线、割线刚度及其退化规律和等效黏滞阻尼比等进行分析。试验结果表明:该结构的承载力为183 k N,极限位移为11 mm,位移延性系数为1.88,具有良好的承载能力和位移延性;填充墙先于拼接节点发生破坏,在加载过程中对节点具有保护作用;结构的滞回性能良好,其割线刚度没有发生明显退化。有限元分析结果表明:墙体厚度和框架跨度的改变对结构耗能能力均有不同程度的影响,而框架层高的改变对结构耗能能力影响不明显。
In order to study the influence of splicing joints of cantilever beams on the seismic performance of steel frames with filled walls, a 静 缩 scale test of cantilever splicing steel frame with masonry filled walls was carried out. ANSYS finite element method Verification and Parameter Analysis. The failure modes, strain changes, hysteretic curves, displacement ductility, skeleton curves, secant stiffness and degradation of the structure and equivalent viscous damping ratio were analyzed. The results show that the structure has a bearing capacity of 183 kN, a limit displacement of 11 mm and a displacement ductility coefficient of 1.88, which has good bearing capacity and displacement ductility. The infill wall destroys before the splicing node. During loading, Has a protective effect; structural hysteretic performance is good, the secant stiffness did not occur significant degradation. The results of finite element analysis show that the changes of wall thickness and frame span have different impacts on the energy dissipation capacity of the structure, while the change of the frame height has no obvious effect on the energy dissipation capacity of the structure.