方管柱与工字钢梁连接的三维有限元模拟分析及试验研究

Experimental study and FEM analysis on connections of rectangular hollow steel column and H-type beam

针对工程中应用广泛的方管柱与工字型钢梁的半刚性连接,对一组不同构造的节点进行了三维有限元模拟分析及静力试验研究.试验结果不仅得到了连接点的M-θ关系曲线,也得到了方管柱开孔周围的应力分布,为分析该类连接节点的力学特性提供了理论依据.在对试验结果与有限元模拟分析进行比较的基础上,还得到了与试验结果相对应的M-θ拟合曲线,为实际应用提供了可供参考的数学表达式.

In accordance with the connections of rectangular hollow steel columns with opening and H-type beams used in engineering, experimental research and FEM analysis on a set of the connections are put forward in this paper. The results of experimental study for M-θ curves and distribution of stress around the opening of the column are obtained, which can be used as theoritical basis of mechanical properties of the connections studied here. Also, the curves of M-θ are obtained based on comparison of experimental results and theoritical results on FEM, which can be used as mathematical expression of M-θ curves of the connections in analysis and design of the steel frames with semi-rigid connections.