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

矩形钢柱与不同深度H型梁连接处节点板的弹塑性行为

• 批准号: 09450210
• 负责人: INOUE Kazuo
• 金额: $ 4.22万
• 依托单位: KYOTO UNIVERSITY (1998)Osaka University (1997)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450210/
• 关键词: joint panel; rectangular hollow section; beams with different depth; diaphragm; width-thickness ratio; axial force ratio

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.

本文研究了矩形钢柱与两个不同高度的H形钢梁连接节点板的弹塑性性能。从理论上推导了板的弯矩、平衡方程、弹性刚度和抗剪强度。并对节点板进行了试验研究。试件为矩形钢柱与两个不同高度的H形梁连接处节点板的十字形组合件。试验参数为梁高差、轴力比和宽厚比。结果如下。(1)在柱与等高两梁连接处，板的弯矩、平衡方程和弹性刚度公式与标准板基本相同。(2)采用塑性分析方法，从理论上推导了板的抗剪强度。在这个分析中，两个崩溃机制被认为是。一种是板为塑性的机理，另一种是板、梁翼缘和梁腹板局部塑性的机理。(3)理论推导的抗剪强度和破坏机理与试验结果吻合较好。