Elasto-Plastic Behaviour on Column-to-Beam Joint Panel under Two Direction Shear force

本文对空间组合结构中空心柱-H型梁节点板在双向力作用下的抗剪性能进行了试验研究和理论分析。使用承受循环横向载荷的连接组件进行了10次试验。试验样品如下：1.五种方形空心板空间组合：高宽比= 1.0、1.5、2.0，轴力比=0、0.25、0.52。三种方形空心板平面组合：高宽比= 1.0、1.5、2.0，轴力比= 0.3。对两种含圆截面空心板的空间组合：高宽比= 1.5，轴力比=0，0.5进行了分析，得出以下结论：1.双向受力的节点板的抗剪强度大于单向受力的节点板.在单向受力的平面组合体中，节点板的高宽比对节点板的抗剪强度没有影响。另一方面，在双向受力的情况下，节点板的弯矩影响节点板的剪应力分布，因此节点板的抗剪强度随节点板高宽比的增大而减小.圆形空心板的抗剪强度随高宽比增大的降低率小于方形空心板.连接节点板的梁腹板减小了节点板的轴向力。因此，空间组合中节点板的轴力比小于平面组合中节点板的轴力比。

This report presents the results of experimental and analytical study on the shear behavior of hollow section column-to-H beam joint panels subjected to two direction force in space assemblages. Ten Tests were carried out using connection assemblages subjected to cyclic lateral loading. Test specimens are as follows :1. Five space assemblages with square hollow section panel: aspect ratio = 1.0, 1.5, 2.0, axial force ratio =0, 0.25, 0.52. Three plane assemblages with square hollow section panel: aspect ratio = 1.0, 1.5, 2.0, axial force ratio =03. Two space assemblages with circular hollow section panel: aspect ratio = 1.5, axial force ratio =0, 0.5The following conclusions can be made :1. The shear strength of the joint panels subjected to two directions force is more than it of the joint panels subjected to one direction force.2. In the case of plane assemblages subjected to one direction force, the aspect ratio of joint panels has no influence on the shear strength of the joint panels. On the other hand, in the case of space assemblages subjected to two directions force, the shear strength decreases as the aspect ratio of joint panel, because bending moment of the joint panels affects the distribution of the shear stress.3. The lowering ratio of shear strength with the increasing ratio of the aspect ratio in the case of circular hollow section panels is less than it in the case of square hollow section panels.4. The beam webs connecting the joint panels reduce the axial force of the joint panels. So, the axial force ratio of the joint panels in space assemblages is less than it in plane assemblages.