- 摘 要
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(北京大學(xué)力學(xué)與工程科學(xué)系 100871)
【提要】 以分別具有下凹和上凸形狀膜結(jié)構(gòu)罩篷的山東招遠和四川達州體育場為例，通過風(fēng)洞試驗?zāi)M的方法對比研究了這兩種體育場罩篷的風(fēng)荷載特性。試驗結(jié)果表明，兩種膜結(jié)構(gòu)在各個風(fēng)向角下，上風(fēng)向罩蓬的風(fēng)壓分布都比較均勻，并且負(fù)壓峰值都位于下風(fēng)向罩篷的前檐附近；下凹形膜結(jié)構(gòu)受到風(fēng)荷載作用時的下壓力要比上凸形膜結(jié)構(gòu)的大，而上吸力要比上凸結(jié)構(gòu)的小。
【關(guān)鍵詞】 膜結(jié)構(gòu) 風(fēng)荷載 風(fēng)洞模擬 下凹 上凸
Wind Loading Behaviour Comparison of Membrane Cantilever Structures with Concave and Conex Shape in Stadiums/Luo Wenlin,Chen Xuerui,Li Yan,Gu Zhifu(Dept.of Mechanics and Engineering Science,Peking University,Beijing 100871,China)
Abstract:By means of wind tunnel simulation,characteristics of wind loading on membrane cantilever structures of concave and convex shape are studied corresponding to Zhaoyuan and Dazhou Stadium in China.The result shows that the wind pressure distributions on upstream cantilever structures are rather smooth at various wind angles of attack.The local peak negative pressure usually locates in leading eave of the downstream membrane structure unit.The significant difference of wind loading of these two kinds of structures is that the positive pressure on the concave structure is greater than that on the convex one,and the reverse for the negative pressure is true.
Keywords:membrane structure;wind loading;concave;convex;windtunnel
