方钢管混凝土柱内隔板式节点的抗弯承载力研究

为了研究方钢管混凝土枉内隔板式节点的抗弯受力性能，完成了3个方钢管混凝土柱内隔板式节点的低周反复荷载试验。在此基础上，研究了轴压作用对方钢管混凝土柱内隔板式节点抗弯承载力的影响，提出了3块内隔板情况下节点抗弯承载力的计算方法。同时对梁柱翼缘等宽情况下节点的抗弯受力性能进行了分析，建立了相应的计算公式，计算结果与试验结果进行了对比，吻合良好。试验结果及理论分析对现行规程中的节点抗弯承载力计算公式进行了补充，拓宽了内隔板式节点的适用范围。

Experimental research and theoretical analysis on flexural capacity of connections for concrete-filled steel square tubular columns with inner diaphragms

To investigate the flexural capacity of connections for concrete-filled steel square tubular columns with inner diaphragms,3 specimens were tested under cyclic loading.Based on the experimental results,theoretical analysis was conducted to study the influence of axial loads on the flexural capacity of this type of connections.Calculation method of bending capacity for the connections with three inner diaphragms was established,and the flexural behavior of full-width connections was analyzed.The results calculated by the theoretical method and the experimental data were compared,and the conclusion can be drawn that the analytical results show good agreement with those of the tests.On the basis of experimental study and theoretical analysis,modification is proposed on the design equations of flexural capacity of connections for concrete-filled steel square tubular columns with inner diaphragms,which expands the scope of this type of connections and can be referenced in design applications.