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提出一种得到顶底角钢自复位节点M-θr关系的实用计算方法。基于对连接破坏机构的研究,通过组件法推导出自复位节点各个阶段的承载力,采用基于Eurocode 3和Kishi-Chen函数模型拟合得到连接的弯矩-转角关系,并对各个阶段提出设计应注意的问题。对文中方法计算结果与有限元分析结果、已有试验结果进行比较,结果吻合良好,从而验证文中方法的有效性。在有限元分析中,节点表现出较好的自复位性能,同时转动中心附近的柱腹板应力集中明显,需合理设计加劲肋和加强板,保证板件的局部稳定。
A practical method of calculating the relationship between the M-θr and the top-bottom angle self-resetting node is proposed. Based on the research on the mechanism of connection failure, the bearing capacity of each node of self-resetting node is deduced by the component method. The relationship between moment and rotation of the connection is obtained by fitting the model based on Eurocode 3 and Kishi-Chen function, and the design of each phase should be noticed The problem. The results of the method in the paper are compared with those of the finite element analysis and the experimental results. The results agree well with each other to verify the effectiveness of the proposed method. In the finite element analysis, the nodes show good self-resetting performance, and the stress concentration on the column web near the rotation center is obvious. Stiffeners and stiffeners need to be designed rationally to ensure the local stability of the plate.