- 摘 要
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（1 天津大學(xué)建筑設(shè)計規(guī)劃研究總院， 天津 300073；2 天津大學(xué)建筑工程學(xué)院， 天津 300072； 3 山東歷下控股集團有限公司， 濟南 250014）
［摘要］采用ANSYS Fluent軟件對柱狀屋面風(fēng)荷載分布進行了數(shù)值模擬。應(yīng)用SST k-ω湍流模型，研究風(fēng)向角、矢跨比、長跨比以及兩端是否封閉對柱狀屋面風(fēng)荷載體型系數(shù)的影響。結(jié)果表明，風(fēng)荷載體型系數(shù)取值受矢跨比、屋面兩端是否封閉和風(fēng)向角影響較大，而受長跨比的影響較小。并將模擬結(jié)果與已有的風(fēng)洞試驗結(jié)果進行對比分析，驗證了數(shù)值模擬結(jié)果的可靠性。最后給出了柱狀屋面的風(fēng)荷載體型系數(shù)的取值建議，為柱狀屋面的結(jié)構(gòu)抗風(fēng)設(shè)計提供有益的參考。
［關(guān)鍵詞］柱狀屋面； 風(fēng)荷載體型系數(shù)； 風(fēng)荷載分布； 數(shù)值模擬
中圖分類號：TU33+3文獻標識碼：A文章編號：1002-848X(2020)11-0129-06
Numerical simulation research and suggestion on value of wind load shape coefficient of column-shaped roof
YU Jinghai1,2, ZHAO Yuyang2, JIANG Zhiyu2, HAN Fengqing3, LI Luchuan1
（1 Architectural Design and Research Institute of Tianjin University, Tianjin 300073， China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China； 3 Shandong Lixia Holding Group Co., Ltd., Jinan 250014, China）
Abstract:The wind load distribution of the column-shaped roof was simulated by ANSYS Fluent software. Using SST k-ω model, the influence on the shape coefficient of wind load on column-shaped roof was studied for the parameters of wind direction angle, rise span ratio, length span ratio and the closure condition of two ends. The results show that the shape coefficient of wind load is greatly influenced by the rise span ratio, the closure condition of two ends and the wind direction angle, but less influenced by the length span ratio. The simulation results were compared with the existing wind tunnel test results to verify the reliability of the numerical simulation results. At last, the suggestion of wind load shape coefficient of column-shaped roof was given, which provided a useful reference for wind resistant design of column-shaped roof.
Keywords:column-shaped roof; wind load shape coefficient; wind load distribution; numerical simulation
*天津市科技支撐計劃(13ZCZDSF01400)。
作者簡介：于敬海，博士，研究員，Email:13302190626@163.com。
