210m高異形煙囪橫風向動力響應研究*
湯卓，王雪，束磊，呂令毅
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（東南大學土木工程學院 RC & PC教育部重點實驗室, 南京 210096）［摘要］研究了橫風向風荷載對高聳異形煙囪的作用模式，采用計算流體動力學(CFD)方法對煙囪進行了非定常風場數值模擬，獲得了煙囪橫風向氣動參數。結合某電廠210m高異形煙囪初步設計方案進行了橫風向風荷載作用下的動力響應分析。［關鍵詞］高聳異形煙囪；橫風向動力響應；CFD模擬；時程分析Research on across-wind dynamic response of a 210m-high special-shaped chimneyTang Zhuo, Wang Xue, Shu Lei, Lü Lingyi（Key Laboratory for RC&PC Structure Education Ministry Southeast University, Nanjing 210096,China）Abstract:The across-wind effects on a special-shaped tall chimney are studied. RMS value of lift coefficient and Strouhal number are obtained by unsteady numerical simulation. Time history response of a 210m-high special-shaped chimney is analyzed, and some useful data and conclusions are obtained.Keywords:special-shaped tall chimney; across-wind dynamic response; CFD simulation; time-history analysis*教育部博士點基金資助（20070286017）。作者簡介：呂令毅，教授，博導，Email：lylu@seu.edu.cn。參考文獻［1］KAREEM A. Model for predicting the acrosswind response of buildings ［J］. Engineering Structures, 1984（6）: 136-141.［2］GIOVANNI SOLARI. 3-D response of buildings to wind action ［J］. Journal of Wind Engineering and Industrial Aerodynamics, 1986，23: 379-393.［3］CHENG C M，KAREEM A. Acrosswind response of reinforced concrete chimneys［J］. Journal of Wind Engineering and Industrial Aerodynamics, 1992，43(3)： 2141-2152.［4］梁樞果,夏法寶,鄒良浩,等. 矩形高層建筑橫風向風振響應簡化計算［J］. 建筑結構學報, 2004, 25(5): 48-54.［5］顧明,葉豐. 高層建筑的橫風向激勵特性和計算模型研究［J］. 土木工程學報, 2006, 39(2): 1-5.［6］NORBERG C. Fluctuating lift on a circular cylinder: review and new measurements ［J］. Journal of Fluids and Structures，2003，17 (1): 57-96.［7］張相庭. 橫風向旋渦脫落共振響應分析及在規(guī)范上的應用 ［J］. 建筑科學, 2000, 16(6): 22-25.［8］SAHA A K， et al. Numerical study of the turbulent unsteady wake behind a partially enclosed square cylinder using RANS ［J］. Computer Methods in Applied Mechanics and Engineering，1999，178 (3-4)：323-341.
