论文部分内容阅读
以天津泰达广场CBD工程A、B区超高层项目为背景,进行了不同连接方法的6个足尺矩形钢管混凝土柱-H型钢梁节点试件拟静力试验,分析了试件的破坏特征、承载力、延性、耗能能力、刚度退化、强度退化等性能。结果表明:在保证焊接及安装质量的前提下不同连接方法节点均具有较高的承载力及良好的抗震性能;在梁翼缘两侧焊接加强板有利于节点承载力的提高,矩形钢管中填充混凝土有利于减小节点核心区的剪切变形,提高节点的强度及刚度。利用ANSYS 10.0软件对试件在循环荷载作用下的滞回性能进行非线性模拟计算,并将理论分析结果与试验结果进行对比。对比结果表明,非线性有限元分析得出荷载-位移曲线与试验结果吻合较好,矩形钢管混凝土柱-H型钢梁节点均具有良好的耗能能力。
Based on the projects of A and B super high-rise buildings in Tianjin TEDA Plaza CBD project, the pseudo-static tests of 6 full-scale rectangular CFST-H beam joints with different connection methods were carried out and the failure characteristics of the specimens were analyzed , Bearing capacity, ductility, energy consumption, stiffness degradation, strength degradation and other properties. The results show that the joints of different connection methods have higher bearing capacity and good anti-seismic performance under the premise of ensuring the quality of welding and installation. The welding of stiffeners on both sides of beam flanges is helpful to improve the bearing capacity of the joints. The rectangular steel tube filled with concrete Which will help to reduce the shear deformation in the core of the node and improve the strength and rigidity of the node. The nonlinear simulation of the hysteretic behavior of specimens under cyclic loading was carried out by using ANSYS 10.0 software. The theoretical analysis and experimental results were compared. The comparison results show that the nonlinear finite element analysis shows that the load-displacement curve agrees well with the experimental results, and the nodes of rectangular CFST-H beam have good energy dissipation capacity.