上海世博會西班牙館表面風(fēng)壓的數(shù)值模擬
趙昕1，周丹2，丁潔民1
- 摘 要
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(1 同濟大學(xué)建筑設(shè)計研究院；2 同濟大學(xué)建筑工程系，上海 200092)［摘要］采用數(shù)值模擬方法對處于設(shè)計方案階段的上海世博會西班牙館的表面風(fēng)壓及其周圍風(fēng)流場進行了計算分析，獲得了該復(fù)雜體型建筑與典型規(guī)則鈍體建筑所不同的風(fēng)壓、風(fēng)荷載體型系數(shù)分布特性及周圍風(fēng)流場分布特點。在對不同風(fēng)向角下的風(fēng)壓、風(fēng)荷載體型系數(shù)分布規(guī)律的分析基礎(chǔ)上，給出了建筑物在最不利風(fēng)向角下的最不利區(qū)域的風(fēng)壓系數(shù)和風(fēng)荷載體型系數(shù)分布曲線，為結(jié)構(gòu)抗風(fēng)設(shè)計參數(shù)的確定提出合理建議和依據(jù)。［關(guān)鍵詞］數(shù)值模擬；風(fēng)壓；風(fēng)荷載體型系數(shù)Numerical Simulation of Wind Pressures on Spanish Pavilion of World Expo ShanghaiZhao Xin1,Zhou Dan2,Ding Jiemin1(1 Architectural Design & Research Institute，2 Department of Building Engineering, Tongji University,Shanghai 200092,China)Abstract:The wind-induced surface pressures and wind flow field around Spanish Pavilion of World Expo Shanghai,which is at the stage of schematic design,are numerically simulated. By analyzing the results,particularly the wind pressure,wind load shape coefficient and wind velocity distribution features,which are different from those of typical blunt buildings,are obtained. Through analysis of the wind pressure and wind load shape coefficient distributions in different wind directions,the wind pressure coefficient and wind load shape coefficient curves on the most critical sections in the most critical wind direction are presented. All the analysis and results can provide reasonable recommendations for the final design scheme.Keywords:numerical simulation; wind pressure; wind load shape coefficient作者簡介：趙昕(1975-)，男，博士，高級工程師，E-mail:kenkicn@gmail.com。參考文獻［1］建筑結(jié)構(gòu)荷載規(guī)范(GB50009—2001)［S］.［2］ALAN G. DAVENPORT. Past,present and future of wind engineering［J］. Journal of Wind Engineering and Industrial Aerodynamics,2002,90: 1371-1380.［3］MURAKAMIS.-Current status and future trends in computational wind engineering［J］. Journal of Wind Engineering and Industrial Aerodynamics,1997,7/68: 3-34.［4］CHANG CH,MERONEY RN. Concentration and flow distributions in urban street canyons: wind tunnel and computational data［J］. Journal of Wind Engineering and Industrial Aerodynamics,2003,91(9): 1141-1154.［5］GOMES MG,RODRIGUES AM,MENDES P. Experimental and numerical study of wind pressures on irregular-plan shapes［J］. Journal of Wind Engineering and Industrial Aerodynamics,2005,93(10): 741-756.［6］Flow and pressure field characteristics around pyramidal buildings［J］. Journal of Wind Engineering and Industrial Aerodynamics,2006,94(10): 745-765.［7］LI QS,FU JY,XIAO YQ. Wind tunnel and full-scale study of wind effects on Chinas tallest building［J］. Engineering Structures,2006,28: 1745-1758.［8］MURAKAMIS. Comparison of various turbulence model applied to a bluff body［J］. Journal of Wind Engineering and Industrial Aerodynamics,1993,(46-47): 121-136.［9］楊偉，顧明. 高層建筑三維定常風(fēng)場數(shù)值模擬［J］. 同濟大學(xué)學(xué)報，2003，32(6): 647-651.［10］陶文銓.數(shù)值傳熱學(xué)(第二版)［M］. 西安: 西安交通大學(xué)出版社，2001.［11］T H SHIH,W W LIOU,A SHABBIR,Z G YANG,J ZHU. A new eddy viscosity model for high Reynolds number turbulent flows［J］. Comput Fluids,1995,24(3): 227-238.［12］張相庭.工程抗風(fēng)設(shè)計計算手冊［M］. 北京：中國建筑工業(yè)出版社，1998.［13］JOHN D. HOLMES. Wind Loading of Structures［M］. London: Spon Press,2001.
