带填充墙的悬臂梁拼接钢框架抗震性能研究

发布时间：2018-11-02 06:51

【摘要】：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。
[Abstract]:In order to study the effect of jointed joints of cantilever beam section on seismic behavior of steel frame with infilled wall, the quasi-static test of a 1 / 2 scale steel frame with masonry infill wall was carried out, and the ANSYS finite element analysis and parameter analysis were carried out. The failure mode, strain variation, hysteretic curve, displacement ductility, skeleton curve, Secant stiffness and its degradation law and equivalent viscous damping ratio are analyzed. The test results show that the bearing capacity of the structure is 183kN, the ultimate displacement is 11 mm, displacement ductility coefficient is 1.88, which has good bearing capacity and displacement ductility. The infilled walls destroy the joints before the splicing joints and protect the joints in the loading process. The hysteretic performance of the structure is good and the Secant stiffness does not degenerate obviously. The results of finite element analysis show that the changes of wall thickness and frame span have different effects on the energy dissipation capacity of the structure, while the change of the height of the frame story has no obvious effect on the energy dissipation capacity of the structure.
【作者单位】：中国矿业大学力学与建筑工程学院;江苏建筑节能与建造技术协同创新中心;
【基金】：国家自然科学基金项目(51274192) 江苏建筑节能与建造技术协同创新中心开放基金项目(SJXTY1609)
【分类号】：TU391;TU352.11

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