田  炜，崔家春，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] 本文通过对张弦梁结构的矢高、垂度、预应力、撑杆数量、上弦刚度及撑杆布置方式进行参数分析，研究了这六种参数对张弦梁结构力学性能的影响方式和影响效果，进而给出了实际工程中各参数的建议取值，为设计选型提供了参考依据。
[关键词] 张弦梁；矢高；垂度；预应力；撑杆布置

    Study on Key Issues of Beam String Structure
    Tian Wei,  Cui Jiachun,  Li Chengming
    ( Technical Center of Shanghai Xian Dai Architectural Design( Croup)  Co. ,Ltd. Shanghai 200041, China)

Abstract: Parameter analysis is studied on beam string structure including rise of arc, drop of cable, prestress of cable, number of stay bars, stiffness of up truss and arrangement of stay bars in this article. Effect of these 6 parameters on mechanical property of the structure is obtained. The results can be used as reference for designing this kind of structure.
Keywords: beam string structure; rise of arc; drop of cable; prestress; stay bar arrangement