【摘要】 大型体育场悬挑屋面的空气动力特征非常复杂,风洞试验研究十分必要。结合广东奥林匹克体育场屋面的风压风洞试验结果,分析了这种屋面的气流流动和风压分布特点,分析表明:①大型体育场屋面上表面在各个风向角下主要分布为负压;大部分区域负压较小且分布均匀,但在迎风和次迎风的边缘部分负压都较大,上倾角度大且直接迎风的端口边缘负压更大;一些下凹区域时有微弱正压出现。②屋面下表面在迎风的钝体边缘有较大区域正压出现,背风部分分布为不大的均匀负压。更多还原

【Abstract】 The flow on the cantilevered roof of large-scale stadium is very complicated when attacked by wind, so the wind tunnel test research on the roof’s wind load is necessary. Based on the results of wind tunnel test for pressure on the roof of the Olympic Stadium in Guangdong Province, the characteristics of the roof’s flow and wind pressure distribution are analyzed in this paper. The results of analysis show: On the up-surface of the large-scale stadium roof, there is mainly negative wind pressure distributed for each wind direction. On most part of the roof, the negative wind pressure is comparatively small and distributed uniformly, but on the windward edge and sub-windward edge, the negative wind pressure is comparatively large, especially at the cantilevered roof with a big upward inclination. In some concave area, there is sometimes very small positive wind pressure; On the down-surface windward butt edge, there is mainly positive wind pressure distributed and on the down-surface lee area, there is small uniform negative wind pressure distributed.更多还原