摘要
组合网壳是一种新型空间结构形式，本文首次采用板壳元、空间偏心梁单元的组合结构有限元法对这种结构的受力特性作了探讨分析，研制了组合网壳受力分析专用计算软件ＣＧＡＳ。文中给出了某一代表性球面组合网壳工程实例，通过分析，阐述了这种结构位移、内力分布规律，讨论了几种与组合网壳相似结构的受力比较，以及肋、钢杆的偏心对受力的影响，总结出的规律对组合网壳结构设计应用有一定参考意义。
Abstract The composite reticulated shell is analyzed by the composite structure finite element method in this paper . A computer program named CGAS is designed to calculate the displacements and internal forces of this structure. Using the program GCAS, the mumerical analysis is presented. The variation of the displacemems and forces in this type of structure is analyzed and the effect of the eccentricities of steel bars and ribs is discussed. In addition, the static behaviour of the composite reticulated shell, spherical ribbed shell and spherical reticulated shell is compared.
出处
《空间结构》
CSCD
1999年第2期51-57,共7页
Spatial Structures
基金
国家自然科学基金
建设部科技发展基金
