（1 天津大学建筑设计规划研究总院， 天津 300073；2 天津大学建筑工程学院， 天津 300072； 3 山东历下控股集团有限公司， 济南 250014）

［摘要］采用ANSYS Fluent软件对柱状屋面风荷载分布进行了数值模拟。应用SST k-ω湍流模型，研究风向角、矢跨比、长跨比以及两端是否封闭对柱状屋面风荷载体型系数的影响。结果表明，风荷载体型系数取值受矢跨比、屋面两端是否封闭和风向角影响较大，而受长跨比的影响较小。并将模拟结果与已有的风洞试验结果进行对比分析，验证了数值模拟结果的可靠性。最后给出了柱状屋面的风荷载体型系数的取值建议，为柱状屋面的结构抗风设计提供有益的参考。

［关键词］柱状屋面； 风荷载体型系数； 风荷载分布； 数值模拟

中图分类号：TU33+3文献标识码：A文章编号：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

*天津市科技支撑计划(13ZCZDSF01400)。

作者简介：于敬海，博士，研究员，Email:13302190626@163.com。