The elasto-plastic behaviors of joint panels at the connection of rectangular steel column and two H-shaped beams with different depth

本文报道了矩形钢柱与不同深度的两根 H 形梁连接处接缝板的弹塑性行为。从理论上推导了这些面板的面板弯矩、平衡方程、弹性刚度和剪切强度。并对连接板进行了测试。试件为矩形钢柱与两根不同深度的H型梁连接处的十字形组合板。这些试验的参数是梁深差、轴力比和宽厚比。结果如下：(1)相同深度的柱与两梁连接处的面板弯矩、平衡方程和弹性刚度公式与标准面板几乎相同。(2)采用塑性分析从理论上推导了该面板的抗剪强度。在此分析中，考虑了两种崩溃机制。一是面板塑性机理，二是面板、梁翼缘、梁腹部分塑性机理。(3)理论推导的抗剪强度和倒塌机理与试验结果吻合较好。

In this paper, the elasto-plastic behavior of joint panels at the connection of rectangular steel column and two H-shaped beams with different depth are reported. Panel moment, equilibrium equation, elastic stiffness and shear strength of these panels are derived theoretically. And the tests of the joint panels are carried out. The specimens are cruciform subassemblages of the joint panels at the connection of rectangular steel column and two H-shaped beams with different depth. The parameters of these tests are difference of beam depth, axial force ratio and width-thickness ratio. The result are as follows.(1) The formulas of panel moment, equilibrium equation and elastic stiffness are almost the same ones of the standard panel at the connection of column and two beams with same depth.(2) The shear strength of those panel is derived theoretically, using plastic analysis. In this analysis, two collapse mechanism are considered. One is the mechanism in which panel is plastic, the other is the mechanism in which parts of panel, beam flange and beam web are plastic.(3) The shear strength and collapse mechanism derived theoretically were good agreement with results of test.