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凯威特网壳的设计参数主要包括跨度、矢高、环向重复区域份数、径向节点圈数和杆件截面尺寸,每类参数的变化都会引起结构内力的重新分配进而改变结构的受力规律;这5类设计参数相互耦合,但应存在一个“最佳组合”使网壳结构的网格尺寸合理、用钢量最省且受力最为合理。对跨度30～90m、矢跨比1/3～1/7,环向重复区域份数6～12,径向节点圈数6～16的数百个单层凯威特型球面网壳模型进行了截面优化设计,以结构用钢量最省为优化目标,优化过程充分考虑了结构强度、刚度和整体稳定性,得出了凯威特型网壳5类主要设计参数的“最佳组合”规律,为工程设计人员提供了有益的参考。
The design parameters of the Keyweix reticulated shell mainly include span, sagittal height, the number of repetitive area in the circumferential direction, the number of radial nodes and the cross-section of the rod, and the change of each kind of parameter will cause the redistribution of the internal force of the structure and thus the force of the structure The five types of design parameters are coupled to each other, but there should be a “best combination” to make the lattice size of reticulated shell structure reasonable, the most economical steel and the most reasonable stress. Hundreds of single-layer Kelwick-type spherical reticulated-shell reticulated shells with a span of 30-90 m, a sagittal span ratio of 1/3 to 1/7, a circle-repetitive area of 6-12, and radial node turns of 6-16 The optimal design of cross-section optimization is based on the optimization of the structural province with the least amount of structural steel. The optimal strength, stiffness and overall stability of the structure are fully considered in the optimization process. The optimal combination of the five main design parameters of the Kaiweite reticulated shell is obtained "Law, provided a useful reference for engineering designers.