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吴太成L2,强士中l,陈东红2-重庆大学学报.PDF

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第25卷 第3期 重庆 建筑 大学学报 V01.25 No.3 2003年6月 Journal ofChongt~ag Jianzhu Univ Jun.2003 文章编号:1006—7329(2003)03—0036—05 大型体育场屋面风压风洞试验研究。 吴太成 ,一, 强士中 , 陈东红2 (1.西南交通大学 土木T程学院,四川成都 610031;2.广东省建筑科学研究院,广州 510500) 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-ge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。 关键词:大型体育场;悬挑屋面;风压分布;迎风边缘 中图分类号:TU352.2 文献标识码:A Wind Tunnel Test Research for Wind Pressure on the Roof of Large Scale Stadium WU Tai—cheng ,一。QIANG Shi—zhong ,CHEN Dong—hond (1.School 0f Civil Eng.,Southwest Jia咖ng University,Ch~,cau 610031,P.R.China;2.Guangdong Provincial Building Re- search Institute,Guangzhou 510500,P.R.China) Abstract:The flow on the cantilevered roof of large——scale st~lim is very complicated when attacked by nd.SO the wind tunnel test research on the roof’S wind load is necessary.Based on the results of wind tun- nel test for pressure on the roof of the Olympic Stadium in Guangdong Province,the characteristics ofthe roof’ S flow and wind pressure distribution are analyzed in this paper.The results of analysis show:On the up—sur。 face of the large—scale stadium roof,there is mainly negative wind pressum distributed for each wind direc。 tion.On most part ofthe 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 8OITle concave area,there is sometimes very small positive wind pressure;On the down—surface windward butt edge,there is mainly positive wind pressure dis。 tributed
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