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钢-竹组合工字形梁和箱形柱的边节点,采用T型钢连接件和螺栓实现组合梁柱之间的连接,并在节点核心区柱子四周焊接钢板形成钢套筒,从而增加节点域的刚度和整体性能。以螺栓数目、强度和有无加劲肋为基本参数,对6个组合梁柱边节点试件进行了拟静力加载试验,观察节点在不同参数条件下的梁端P-滞回曲线、组合梁柱之间的转角和节点区钢板的剪切变形,得到了梁柱节点的耗能系数、延性系数等抗震性能指标,在此基础上进行了节点区连接件理论转角计算方法分析。试验结果表明,螺栓强度等级和根数对节点核心区的剪切变形和组合梁柱节点的极限承载力影响不大,但节点区钢套筒焊脚尺寸和加劲肋的设置变化对节点转动刚度和抗震性能指标影响显著。根据钢-竹组合节点在弹性阶段的梁端位移和应力、应变关系,提出了组合节点的力学简化模型及连接件转角的计算方法,其计算结果与试验值吻合较好。
Steel-bamboo combination I-beam and box-shaped column edge nodes, the use of T-beam connectors and bolts to achieve the connection between the beam column and the core area around the column welded steel plate to form a steel sleeve, thereby increasing the stiffness of the node domain and Overall performance. Based on the number of bolts, the strength and the presence or absence of stiffeners, the quasi-static loading tests on six composite beam-column joints were carried out to observe the P-hysteresis curve of the beam joints under different parameters. And the shear deformation of the steel plate in the node area, the seismic performance indexes such as the energy dissipation coefficient and the ductility coefficient of the beam-column joint are obtained. Based on the analysis, the calculation method of the theoretical corner of the joint in the joint area is analyzed. The experimental results show that the strength and the number of bolts have little effect on the shear deformation of the core region and the ultimate bearing capacity of the composite beam-column joints. However, And seismic performance index significant impact. According to the displacement and the stress and strain of the beam at the elastic stage of the steel-bamboo composite joints, a simplified mechanics model and the calculation method of the joint corner are proposed. The calculated results are in good agreement with the experimental values.