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深圳大运会体育馆、体育场的主体结构是由三角形网格组成,其外形如宝石群,为单层折面空间网壳结构。通过构形研究和机动分析,论证了宝石群单层折面网壳是一种满足几何不变性基本要求的静定空间桁架结构。通过研究圆形平面的宝石群单层折面网壳,提出了简化杆系计算模型及其计算方法,可精确求得网壳结构的内力和位移。在基本结构体系基础上,增设若干道环向杆件,改善宝石群单层折面网壳的受力特性。研究了宝石群单层折面网壳结构形体组成规律、受力特性、结构的简化计算方法和增加环杆的结构优化设计原则,有利于工程的初步设计和多方案结构分析比较。
Shenzhen Universiade Stadium, the stadium’s main structure is composed of a triangular grid, its shape, such as gem group, single-layer folded surface reticular shell structure. Through the study of the configuration and the maneuver analysis, it is demonstrated that the gem group single-layer meshed reticulated shell is a kind of statically stable space truss structure which meets the basic requirements of geometric invariance. By studying the single flat meshed reticulated shell of the gem group in the circular plane, a simplified model of the rod system and its calculation method are proposed, and the internal forces and displacements of the reticulated shell can be accurately obtained. On the basis of the basic structural system, a number of rings are added to improve the stress characteristics of the single-layer folded reticulated shell of the gem group. The compositional rules, force characteristics, simplified calculation method of structure and the principle of optimal design of ring structure are studied. It is benefit to the preliminary design of the gem group and analysis and comparison of multi-structure.