局部单双层网壳结构的参数分析  

PARAMETRIC ANALYSIS OF PARTIALLY SINGLE-LAYERED RETICULATED SHELLS

作　　者：肖建春[1] 胡滨[1] 马克俭[1] 樊剑[2] 

机构地区：[1]贵州大学空间结构研究所,贵州 贵阳550003 [2]华中科技大学土木工程与力学学院,湖北 武汉430074

出　　处：《工程力学》2009年第A01期7-11,共5页Engineering Mechanics

基　　金：贵州省优秀科技教育人才省长专项资金项目(200625)

摘　　要：为考虑设计变量之间的相互作用和荷载组合的影响,采用均匀设计法进行局部单层、双层网壳的参数分析。考虑了网壳矢高、单层范围面积、单层部分杆件的设计应力比等设计变量。使用较少的计算实验次数,得到材料用量、最大位移、基本频率和屈曲荷载的反应面近似函数,以及变量、组合变量的显著性顺序。局部单双层六边形网壳的材料用量和屈曲荷载受单层范围面积影响最大。预应力局部单层、双层六边形网壳的材料用量和屈曲荷载受单层部分杆件的设计应力比影响最明显。To consider the interactions among design variables and the influence of load combinations, a uniform design method is adopted to make the parametric analysis of partially single-layered reticulated shells. Design variables, such as the shell rise, the area of the single-layer region, and the design stress ratio for single-layer members are considered. The approximate response surface functions of the amount of materials, the maximum deflection, the fundamental frequency and the buckling load are gained with a few numbers of computational experiments. The significance orders of design variables and combined variables are also presented. For partially single-layered hexagonal reticulated shells, the area of the single-layer region exerts the most significant influence on the amount of materials and the buckling load. The design stress ratio for single-layer members remarkably changes the amount of materials and the buckling loads of prestressed partially single-layered hexagonal reticulated shells.

关 键 词：网壳 参数分析 均匀设计 局部单双层 预应力 

分 类 号：TU356[建筑科学—结构工程]