双腹板、顶底角钢半刚性节点的数值模拟分析和试验研究

在双腹板、顶底角钢半刚性节点的试验研究分析的基础上,采用PATRAN系统进行有限元建模,利用MARC有限元分析软件对9个双腹板、顶底角钢半刚性节点进行了数值模拟,并将数值模拟分析结果与真实实验室试验得到的数据进行了对比,研究了其在低周反复荷载作用下的滞回性能和刚度性能.分析了梁截面高度、顶底角钢厚度、角钢与柱相连的螺栓孔中心到角钢长肢边的距离以及螺栓直径等因素对节点的初始刚度和极限弯矩的影响,讨论了数值模拟分析与真实实验室试验之间的差别.

The numerical simulation analysis and experimental study of semi-rigid connections with dual-web and top angle

Base on the experimental study on the semi-rigid connections with dual-web and top angle, PATRAN and MARC were used to set up a finite element model and analyze nine semi-rigid connections with dual-web and top angle. The results of numerical analysis were compared with real data obtained from laboratory tests, and the hysteretic behavior and stiffness performance were studied in the low-cycle loading. The effects of beam height, thickness of top and bottom angle, the distance of the center of the bolt hole on the column to the long limb side of angle as well as factors such as the bolt diameter on the initial stiffness and limit moment of the nodes were analyzed. The differences between numerical analysis and laboratory testing were discussed.