某体育会展中心大跨屋盖系统风荷载试验

Wind Tunnel Test on Long Span Roof of a Sports and Exhibition Center

介绍了某体育会展中心会展馆和体育场的大跨屋盖系统模型风洞试验的概况和主要试验结果,分析了挑篷上平均风压和脉动风压的分布,讨论了脉动风压对总设计风荷载的贡献,并对比了计算围护结构风荷载的规范方法和统计方法;结果表明,正面迎风时,体育会展馆和体育场屋盖边缘的平均风压和脉动风压系数均较大,采用规范方法算得的会展馆围护结构风荷载大部分小于采用统计方法算得的数值,而用规范方法算得的体育场围护结构风荷载均小于用统计方法算得的结果。

The test conditions and main results of the wind tunnel test of the long span roof of the exhibition hall and stadium in a sports and exhibition center are introduced. The distribution of the mean and fluctuating wind pressures of the roof is analyzed, the contribution of the fluctuating wind pressures to the total wind loads is discussed, and the code for computing the wind loads of the cladding structure and the statistical method to it are contrasted. Results show that mean and fluctuating wind pressure coefficients of the leading edge of the roof in the upwind are comparatively large, the wind loads for the cladding structure of the exposition by the code method are mostly smaller than those from the statistical method, and the wind loads for the cladding structure of the stadium by the code method are smaller than those from the statistical method.