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参考国内外学者对钢管节点的研究成果,借鉴其研究方法,对影响X形、T形圆管节点强度的主要因素进行选取:支管与主管直径之比β、主管外径与其厚度比值2γ、支管与主管厚度比值τ,同时考虑焊缝对节点性能的影响,并引用国外最新的不锈钢管节点的试验数据,以证明有限元分析模型的正确性。通过采用有限元分析软件对选定的圆管节点进行分析,获得节点三种破坏模式,并将其数值模拟结果与GB 50017—2003《钢结构设计规范》中碳钢节点设计公式的计算结果进行对比,研究该算式用于不锈钢管节点设计的适用性,并基于算式,提出相应的设计参考式。
Reference to domestic and foreign scholars on the steel tube node research results, learn from its research methods, the impact of X-shaped, T-shaped tube node strength of the main factors are selected: the diameter of the branch and the main tube β, the outer diameter and its thickness ratio 2γ, And the ratio of the thickness of the main control τ, taking into account the weld joint performance of the node, and cite the latest experimental data of stainless steel pipe joints to prove the correctness of finite element analysis model. By using finite element analysis software to analyze the selected pipe joints, three kinds of failure modes of the joints are obtained, and the numerical simulation results are compared with the calculation results of the design formulas of carbon steel joints in “Design Code of Steel Structure” of GB 50017-2003 In contrast, the applicability of this formula to the design of stainless steel pipe joints is studied and the corresponding design reference is proposed based on the formula.