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该文通过试验对钢管环型加肋节点的极限承载力进行了研究,同时借助有限元对此类节点进行了参数分析。根据试验和有限元所得到结果并结合虚功原理,提出了适用于估算此类节点极限承载力的极限分析模型和用于工程设计的建议计算公式,并与试验和有限元所得到的结果进行了比较。结果表明:分析模型具有较好的适用性;建议公式合理有效。
In this paper, the ultimate bearing capacity of ring-stiffened joints of steel tube is studied through experiments, and the parameters of such joints are analyzed by finite element method. Based on the results obtained from experiments and finite element analysis combined with the principle of virtual work, the limit analysis model suitable for estimating the ultimate bearing capacity of such nodes and the proposed calculation formula for engineering design are proposed. The results obtained from the experiments and finite element analysis A The results show that the analytical model has good applicability and the proposed formula is reasonable and effective.