新廣州火車站大跨屋蓋結構風荷載風洞試驗與數值模擬研究
金新陽1，楊易1，盛平2，沈婷3，唐意1，金海1
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（1 中國建筑科學研究院，北京 100013； 2 北京市建筑設計研究院，北京 100045；3 中鐵第四勘察設計院集團有限公司，武漢 430063）［摘要］采用“數值模擬引導下的風洞試驗研究”技術路線，首先在新廣州火車站大跨屋蓋結構的擴初設計階段，對主導風向角下的平均風壓分布進行了數值模擬計算和預測，輔助設計人員對結構方案進行優(yōu)選；隨后利用數值模擬結果對大體量剛性模型測壓風洞試驗的測點數量和位置進行了優(yōu)化，以便捕捉到最不利的風壓分布并保證風振響應分析所需的同步性；最后進行了數值模擬結果與風洞試驗結果的相互比較和驗證，結果表明兩者所得的風壓分布趨勢和數值結果吻合良好；研究成果已經成功應用于該工程的結構設計中。［關鍵詞］大跨屋蓋結構；?風荷載；?風洞試驗；?數值模擬Research on wind loads of New Guangzhou Railway Station by wind tunnel test and numerical simulationJin Xinyang1, Yang Yi1, Sheng Ping2, Shen Ting3, Tang Yi1, Jin Hai1(1 China Academy of Building Research, Beijing 100013, China; 2 Beijing Institute of Architectural Design, Beijing 100045, China; 3 China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)Abstract:Using the technical road map of CFD-induced wind tunnel test research, the distributions of mean wind pressure for dominated wind directions on the large span roof of New Guangzhou Railway Station were simulated to assist the designers optimizing the roof structure. The number and location of taps for the grand dimension wind tunnel test were optimized to catch the most unfavorable distributions and ensure the synchronization of wind pressure by referring to the numerical results. The results of numerical simulation and wind tunnel test were compared and calibrated each other and showed well fitted. The wind loads from the research have been successfully used in the structural design.Keywords:large-span roof structures; wind loads; wind tunnel test; numerical simulation國家“十一五”科技支撐計劃課題(2006BAJ02A05)和國家自然科學基金（50708014）聯(lián)合資助。作者簡介：金新陽，研究員，Email:jinxinyang@cabrtechcom。參考文獻［1］盛平，柯長華，甄偉，等.廣州新客站結構總體設計［Ｊ］.建筑結構，2009，39(12).［2］金新陽，楊偉，金海，等.數值模擬引導下的建筑風洞試驗研究［J］.建筑結構，2007，37(8)：104-107.［3］金新陽，楊偉，金海，等.數值風工程應用中湍流模型的比較研究［J］.建筑科學，2006，22(5)：1-5.［4］楊偉，金新陽，陳素琴，等.風工程數值模擬中平衡大氣邊界層的研究與應用［J］.土木工程學報，2007，40(2)：1-5.［5］YANG YI, GU MING, CHEN SUQIN，et al. New inflow boundary conditions for modeling the neutral equilibrium atmospheric boundary layers in computational wind engneering［Ｊ］． Journal of Wind Engineering and Industrial Aerodynamics, 2009, 97(2)：88-95.［6］GB50009—2001 建筑結構荷載規(guī)范［S］.北京：中國建筑工業(yè)出版社，2001.
