Abstract This research presents a numerical investigation on the behaviour of through rib stiffener steel beam connected to circular concrete-filled steel tube (CFT) column subjected to the cyclic loading. A nonlinear Finite Element (FE) model was established using ABAQUS/Standard program. The accuracy of the FE result was examined through comparing it with the previous experimental test results. The effects of various parameters on the failure mode and ultimate moment capacity of the connections were investigated on twenty-four FE models. The parameters were stiffener’ height, length, and thickness including varied thicknesses and diameters of the hollow circular steel tube. The FE results indicated that the larger height of the through rib stiffener improved buckling behaviour of the steel tube column and the moment capacity by 8%. Meanwhile, the longer and thicker through rib stiffener effectively shifted the beam plastic hinge’s location away from the column, which resulted in 4% improvement in ultimate moment capacity of the connection.

中文翻译：

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循环荷载作用下贯穿肋加劲肋梁与钢管混凝土柱连接的数值研究

摘要 本研究对连接到圆形钢管混凝土 (CFT) 柱的通肋加劲肋钢梁在循环荷载作用下的行为进行了数值研究。使用 ABAQUS/Standard 程序建立非线性有限元 (FE) 模型。通过与之前的实验测试结果进行比较来检验有限元结果的准确性。在二十四个有限元模型上研究了各种参数对连接失效模式和极限力矩容量的影响。参数是加强筋的高度、长度和厚度，包括空心圆钢管的不同厚度和直径。有限元结果表明，通肋加劲肋的较大高度使钢管柱的屈曲行为和弯矩承载力提高了 8%。同时，