崔家春，田  炜，李承铭
    （上海现代建筑设计（集团）有限公司技术中心，上海200041)

[摘要] 张弦梁结构中索锚固节点的强度和合理性直接影响到整个结构的可靠性，在实际工程中通常采用铸钢节点。对某张弦梁结构的铸钢节点进行非线性有限元分析，得到了节点在3倍设计荷载作用下的应力、应变发展过程，以及节点的强度、极限承载力等。为工程设计提供了充分的依据，也为同类工程提供了可参考的技术资料。
[关键词] 张弦梁；铸钢节点；有限单元法；非线性分析

    Nonlinear Finite Element Analysis on Cast Steel Joint of the Beam String Structure
    Cui Jiachun,  Tian Wei,  Li Chengming
    ( Technical Center of Shanghai Xian Dai Architectural Design( Group)  Co. ,Ltd.,  Shanghai 200041, China)

Abstract: Strength and rationality of cable joint will affect reliability of the beam string structure, so it used to be made of cast steel. A cast steel cable joint was analyzed by nonlinear finite method in 3 times of design load. Development process of stress and strain, strength and extreme load of node are obtained. The results provide sufficient data for projects.
Keywords: beam string structure;  cast steel joint; finite element method;  non-linear analysis