廖旭钊
    (广东省建筑设计研究院，广州510010)

[摘要] 广州大学城中心区体育场东看台罩棚采用“预应力斜拉网格——桅杆吊挂的双铰结构体系”，本文结合工程实际，总结了斜拉网格结构的结构特点及主要设计要素的影响：介绍了大跨度钢结构罩棚风荷载的特点及荷载风振系数的简化处理方法，总结了罩棚抗风设计的难点；简要介绍了本工程斜拉网格结构拉索预应力的确定原则及施工控制；提出了“局部优化配重”的无抗风索设计思路；对本工程斜拉网格结构整体稳定问题进行了分析。
[关键词] 承载力特征值；修正系数；基础埋深

The steel shed structure design of the east stand of Guangzhou University Cty's central stadium
Liao Xuzhao
(The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China)

Abstract: The system of prestressed stay grid and suspended mast with double hinges" is adopted in the east stand of Guangzhou University City's central stadium. This article summarizes the structural characteristics of stay grid structure and infections of main design factors from actual constructions. The characteristics about wind loads of the large-span steel shed structure and simplifying methods for the wind-shake coefficient ofloads are introduced, in the meanwhile summarizing the difficulties in the wind-resistance design ofsheds. The confirming principles for prestress forces of stay grid cables and constructional controlling are briefly presented, bringing forward the designing idea of "optinuzationally partly weighed" windless cable. The whole body stabilization ofthe stay grid structure in this project is analysed.
Keywords: characteristic-value of bearing capacity; modified coefficient;