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为研究梁柱弱轴连接的抗弯性能,进行了2类共6个大尺寸弱轴顶底角钢连接试件的单调加载试验,试验试件包括腹板-角钢连接试件和本文根据梁柱弱轴连接受力变形特点设计的T形钢-角钢连接试件。根据经典力学理论,推导了弱轴顶底角钢连接初始刚度的分析计算方法。梁柱弱轴角钢连接的刚度取决于各组件的刚度,角钢、螺栓和与角钢竖向肢连接的板件起决定作用,其中刚度最小的组件其几何尺寸对连接刚度的影响最明显。弱轴顶底角钢连接作为一种典型的半刚性连接,具备良好的变形能力、一定的弯矩承载能力和很好的钢材屈服后塑性强化能力。
In order to study the flexural behavior of the weak-shaft connections of beams and columns, a monotonic loading test of 6 large-scale weak-shaft top-bottom angle steel connections was carried out. The test specimens consisted of web-angle connection specimens and the columns according to this paper. The T-shaped steel-angle steel connection test piece designed for the weak deformation of the weak shaft connection is designed. According to the classical mechanics theory, an analytical calculation method for the initial stiffness of the angle connection at the base of the weak shaft is deduced. The stiffness of beam-column weak-shaft angle connections depends on the stiffness of each component. Angle plates, bolts, and plates connected to the vertical leg of angle steels play a decisive role. Among them, the geometry of the components with the smallest stiffness has the most significant influence on the connection stiffness. The weak-shaft top-bottom angle steel connection, as a typical semi-rigid connection, has a good deformability, a certain bending moment carrying capacity and a good steel post-yield plastic strengthening ability.