斜拉索张力优化研究

Research on Optimization of Stay Cable Tension

合理确定斜拉索的预张力是斜拉空间网格结构成败的关键,提出一种适用于半刚性结构的静力平衡法线性迭代优化方法。通过对灵武体育中心体育场屋盖斜拉索张力优化分析,获得{N3}=(1+0.3)N为优化预张力,结构最大竖向位移为跨度的1/718,各杆件应力/强度比基本在0.8以内。

Reasonable determination of the pre-tension in cables is the key point to the success of cable-stayed spatial grid structure .This paper presents a linear iterative optimization method of static equilibrium meth-od suitable for semi-rigid structure .By analyzing and optimizing the tension in the roof cables of Lingwu Sports Center Stadium, this paper obtains the conclusion that {N3} =（1＋0.3）N is the optimized pretension of the ca-bles , and under this circumstance , the maximum vertical displacement of the structure is 1/718 of the span and the stress /strength of each rod is less than 0.8.