沈阳恒隆市府广场超高层塔楼风荷载分析研究  

Study on wind load analysis of super high⁃rise tower in Shenyang Henglong City Square

作　　者：陈勇[1] 陈鹏[1] 金钊[1] CHEN Yong;CHEN Peng;JIN Zhao(China Northeast Architectural Design&Research Institute Co.,Ltd.,Shenyang 110006,China)

机构地区：[1]中国建筑东北设计研究院有限公司,沈阳110006

出　　处：《建筑结构》2024年第11期149-154,共6页Building Structure

基　　金：中国建筑东北设计研究院有限公司科研项目(2021-DBY-kY01、DBY-2022-07)。

摘　　要：为了确定高度350.6m沈阳恒隆市府广场塔楼结构设计的风荷载,采用刚性风洞试验与风洞数值模拟相结合的方法分析塔楼的风荷载,风洞试验研究给出楼层剪力与扭矩及风致加速度。采用四种湍流模型进行风洞数值模拟,分析建筑平均风压系数、体型系数、基底剪力及倾覆力矩,并与风洞试验进行比较,得出适用于超高层建筑风洞模拟的湍流分析模型,利用该分析模型的数值风洞模拟技术,分析塔楼13个风向角的风压系数、体型系数和基底剪力,为结构风荷载取值提供依据。研究结果表明:相比于《建筑结构荷载规范》(GB 50009—2012)对近似矩形平面建筑物的体型系数的规定,RSM模型迎风面0.83、背风面-0.56,与规范矩形截面迎风面0.8、背风面-0.6最为接近;RSM模型与试验吻合最好;选取RSM模型来分析超高层等大型复杂结构风荷载,能够得到较为准确的结果。In order to determine the wind load of the tower structure design of Shenyang Henglong City Square with a height of 350.6 m,the wind load of the tower was analyzed by the combination of rigid wind tunnel test and wind tunnel numerical simulation.The wind tunnel test gives the floor shear force and torque and wind⁃induced acceleration.Four turbulence models were used to simulate the wind tunnel.The average wind pressure coefficient,shape coefficient,base shear force and overturning moment of the building were analyzed and compared with the wind tunnel test.The turbulence analysis model suitable for the wind tunnel simulation of super high⁃rise buildings was obtained.The numerical wind tunnel simulation technology of the analysis model was used to analyze the wind pressure coefficient,shape coefficient and base shear force of the 13 wind direction angles of the tower,which provides a basis for the value of structural wind load.The results show that compared with the provisions of the Load code for the design of building structures(GB 50009—2012)on the shape coefficient of approximate rectangular plane buildings,the RSM model has a windward surface of 0.83 and a leeward surface of-0.56,which is closest to the windward surface of 0.8 and the leeward surface of-0.6 of the rectangular section in the code.RSM model is the most consistent with the experiment.RSM model is selected to analyze the wind load of super high⁃rise buildings and other large complex structures,and more accurate results can be obtained.

关 键 词：超高层塔楼 刚性风洞试验 数值模拟 风压系数 体型系数 湍流模型 

分 类 号：TU312.1[建筑科学—结构工程] TU318.1