齐月芹，张  婷，刘灵灵
    (石家庄铁道学院工程力学系，石家庄050043)

[摘要] 将复形法引入大跨度双层柱面网壳结构的优化设计中，建立了柱面网壳结构目标函数，以网壳结构的网格尺寸、网壳厚度、网壳矢高为设计变量，以杆件的强度和最小截面尺寸为约束条件，编制了相应的程序，并进行了三圆弧网壳结构外形尺寸多种方案的优化分析，得出跨度为87m三圆弧网壳的最优网格尺寸和最优网壳厚度。
[关键词] 复形法；大跨度圆柱面网壳；优化设计

    Optimal design oflarge span cylindricallatticed shell with complex method
    QiYueqin,  Zhang Ting,  Liu Lingling
    ( Department of Mechanics, Shijiazhuang Railway Institute, Shijiazhuang 050043, China)

Abstract: It proposed that complex method could be used in the optimization design of double-layer cylindrical latticed shell, which establishes the minimum weight objective function, which takes grid size, the vault thickness ,rise highness as design variables and constraints of strength and nunimum cross-section. Through compiling programs and Optimization analyzing samples, It obtains the optimal grid size and vault thickness in the 87 meter span of cylindrical shell.
Keywords: complex method; large span cylindrical latticed shell; optimization design