中文摘要：

利用ABAQUS软件建立方钢管混凝土柱-H型钢梁螺栓连接组合节点的三维有限元数值分析模型,通过变化节点参数,共设计3组7个试件,对节点试件进行非线性有限元数值仿真模拟,研究此类节点在静力荷载作用下的荷载-位移曲线,分别考察正负弯矩作用下楼板组合作用对其受力性能的影响,确定影响其极限承载力、延性及初始转动刚度的主要因素及其影响规律。研究结果表明：组合节点的极限承载力、延性及初始转动刚度等,随着压型钢板-混凝土组合楼板板厚、配筋率的增大而逐渐增大,随着抗剪栓钉布置数量的减少而降低。

英文摘要：

The three-dimensional finite element numerical analysis model of the concrete-filled square steel tubular column to H-section steel beam bolt connection joints was established by the large general finite element software ABAQUS,three groups of seven specimens were designed by changing joint parameters,which were subjected to the nonlinear finite element numerical simulation. The load-displacement curve of such joints under the static load was studied,and the effect of composite action of floor slabs on its mechanical performance under the positive and negative bending moment was investigated to determine the main influence factor and influence law on the ultimate bearing capacity,ductility and the main factors of initial rotational stiffness. The results showed that the ultimate bearing capacity,ductility and the initial rotational stiffness of the composite joints were gradually increasing with the increase of thickness and reinforcement ratio of the profiled steel sheet-concrete composite floor slab,and decreasing with the decrease in the number of shear studs.