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通过对6个具有不同构造特征和几何尺寸的H形钢梁-柱半刚性连接试件进行拟静力试验和有限元分析,得到节点弯矩-转角(M-θ)滞回曲线及M-θ骨架曲线,分析了试件的极限弯矩、连接初始刚度、延性、耗能性等性能。研究结果表明:对于几何尺寸相近的梁柱端板连接,柱强轴方向翼缘-端板连接的极限弯矩及初始连接刚度远高于柱弱轴方向的腹板-端板连接,且后者的延性也比较差;采用弱轴方向的端板连接,应在腹板的两个方向同时设置加劲板,以保证有足够的连接强度和延性;在柱翼缘设置抗剪托板对于梁柱外伸端板连接性能无明显影响,而且延性还有降低趋势。
Through the pseudo-static test and finite element analysis of six H-shaped steel beam-column semi-rigid connection specimens with different structural features and geometrical dimensions, the moment-moment (M-θ) hysteresis curve and the M- θ skeleton curve, the analysis of the specimen of the ultimate bending moment, initial stiffness, ductility, energy dissipation and other properties. The results show that the ultimate bending moment and initial connection stiffness of flange-end plate in the direction of column strong axis are much higher than the web-end plate connection in the direction of weak axis of column, and the ductility of the latter Is relatively poor; the use of weak axis direction of the end plate connection, should be in both directions of the web at the same time set stiffener, to ensure adequate connection strength and ductility; set shear flange in the column flange for beam overhang No significant effect on board connection performance, ductility and there is a downward trend.