中文摘要：

目前对风敏感结构的抗风优化研究主要集中于高层建筑，而对大跨屋盖结构的抗风优化研究较少。以一实际大跨双层柱面网壳为研究对象，基于GustLoadingFactor（GLF）法构造等效静力风荷载，建立空间桁架结构的应力比法抗风优化设计框架和计算程序。编制计算程序进行数值分析表明，通过优化可使结构总重最多降低约84％，且设定杆件截面积下限后所有杆件应力小于容许应力，因此本文方法用于空间桁架结构的抗风优化中简单有效，容易推广至实际工程设计中。

英文摘要：

Most wind resistant optimization studies are about tall buildings, and long span roof structures are seldom studied. A double-layer cylindrical reticulated shell was analyzed in this paper under the equivalent static wind loads that were gained by the Gust Loading Factor （GLF） method. The framework for wind resist- ant optimization design of truss roofs was developed based on the stress ratio method. Numerical analyses show that the total weight of the reticulated shell was reduced 83% through optimization and stresses in members are less than the allowable stress with the low bound of sectional area. Therefore, the proposed optimization frame- work is simple and efficient for trussed roof design. It should also be easy to be applied in other engineering designs.