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为研究方钢管柱-H形钢梁槽钢节点的静力性能,对5个节点试件进行了单调加载静力试验。试件为边柱节点,试件参数为槽钢类型、槽钢尺寸以及管内加劲肋。详细考察试验全过程和试件破坏形态,分析节点的转动刚度、承载能力、应力-应变关系等。采用有限元软件ABAQUS对节点进行有限元分析,将有限元得到的M-θ曲线与试验结果进行对比。研究结果表明:试件破坏时,破坏主要发生在槽钢上,主要表现为螺栓孔撕裂、槽钢受拉侧腹板鼓曲、受压侧翼缘屈曲;槽钢翼缘与钢管柱壁刚度比较小时,槽钢翼缘会出现明显鼓曲;槽钢翼缘与钢管柱壁刚度比较大时,钢管壁受压区会出现较明显局部屈曲,槽钢腹板越厚,节点承载力越高;槽钢节点有较好的变形能力与抗弯承载能力,为半刚性节点。
In order to study the static behavior of the square steel column-H-shaped steel beam channel joints, a monotonic loading static test was carried out on the five-node specimens. The specimen is a side column node, the specimen parameters are channel type, channel size and stiffener in the tube. The whole process of the test and the failure morphology of the specimen were investigated in detail, and the rotation stiffness, bearing capacity and stress-strain relationship of the joints were analyzed. Finite element analysis was carried out by finite element software ABAQUS, and the M-θ curve obtained by finite element method was compared with the experimental results. The results show that when the specimen is damaged, the damage mainly occurs on the channel steel, which mainly includes the tear of the bolt hole, the buckling of the channel on the tension web, the buckling of the flange on the compression side, the stiffness of the channel flange and the column wall When the stiffness of channel flange and column wall is relatively large, the buckling of the pipe wall will be more obvious local buckling, the thicker the channel web, the higher the bearing capacity of the node ; Channel node has better deformation capacity and flexural capacity, as a semi-rigid node.