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方钢管T形相贯节点承受平面外弯矩作用是与其它工况一样重要的一种工况,但目前规范中对这种受力模式下的加劲肋加强节点承载力计算公式没有规定,这影响着工程设计的效率与质量。在经试验验证有限元分析准确性的前提下,进行参数化分析和回归分析。结果表明:加劲肋加强节点的极限承载力是无加强节点的2.6倍,承载力提高系数ψ随加劲肋与主管厚度比τ、加劲肋与主管宽度比η的增加而增加,其中参数η的影响更大,提高系数ψ随β增加而减小。在无加劲肋方钢管相贯T形节点平面外受弯承载力计算公式的基础上,通过参数化分析得出有加劲肋时方钢管T形节点平面外弯矩作用下极限承载力计算公式,为这类节点的继续研究和工程应用提供了参考。
T-shaped tubular square steel tubular joints subjected to out-of-plane bending moments are just as important as other working conditions. However, there are no rules for calculating the bearing capacity of stiffened stiffened joints in this model The efficiency and quality of engineering design. Under the premise of the accuracy of experimental verification of finite element analysis, parametric analysis and regression analysis. The results show that the ultimate strength of the stiffened stiffener is 2.6 times that of the stiffened stiffened stiffener, and the coefficient of bearing capacity ψ increases with the ratio of stiffener to master thickness τ and the ratio of stiffener to director width η, and the influence of parameter η Larger, increasing coefficient ψ decreases with increasing β. Based on the calculation formula of out-of-plane flexural capacity of T-shaped joints with stiffened square steel tube, the formula for calculating ultimate bearing capacity of T-shaped joints with stiffeners is derived by parametric analysis. It provides a reference for the further research and engineering application of such nodes.