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某站房为单层网壳结构,对其风洞试验结果表明:风在屋盖表面发生局部扰流和紊流并形成回旋涡流,屋盖以受升力为主,最不利位置在陡端底部。结构整体对称而局部构造不对称的大跨度屋盖结构,即使在对称风力作用下,风对屋盖整体影响也是不对称的,这主要是由于表面构造不均匀所致。
The wind tunnel test results show that the wind has local turbulence and turbulence on the surface of the roof and forms swirling vortex. The roof is dominated by the lift and the most unfavorable position is at the bottom of the steep end . The long-span roof structure with symmetrical structure and asymmetrical local structure has asymmetrical wind influence on the whole roof even under the action of symmetrical wind force, which is mainly attributed to the uneven surface structure.