基于风洞试验的双曲面超高层建筑风压特性分析  

Wind Pressure Characteristics Analysis on Hyperbolic Super Tall Building Based on Wind Tunnel Test

作　　者：蒋家园 JIANG Jiayuan(China Railway 18th Bureau Group Co.,Ltd.,Tianjin 300222,China)

机构地区：[1]中铁十八局集团有限公司,天津300222

出　　处：《施工技术（中英文）》2024年第21期123-127,共5页Construction Technology

基　　金：中铁十八局集团有限公司科技创新项目(G21-09)。

摘　　要：依托迪拜蓝天酒店工程,采用风洞试验方法,研究双曲面超高层建筑外立面极值风压分布特性。根据建筑外立面支撑面积,给出支撑面积折减系数。根据不同的荷载组合,给出角部风荷载组合系数,通过叠加外立面风压块,可确定对应的风荷载。研究结果表明,超高层建筑造型复杂的外立面及立面交界拐角位置极值风压较大,这是由建筑外形突变和来流风绕流效应引起的,在设计过程中应重点考虑相应区域建筑外立面抗风性能。Taking the Ciel Tower in Dubai project as the background,wind tunnel tests are used to analyze the extreme wind pressure on the exterior surfaces of a hyperbolic super tall building.The reduction coefficient for the supporting area of the building’s facade is obtained based on the supporting area.Combination coefficients of wind load at corners are given based different load combinations,and the corresponding wind loads can be determined by superimposing wind pressure blocks on the exterior surfaces.The research results show that the extreme wind pressures are large in the areas with complex shapes and the intersections of facades at corners of super tall buildings,which is caused by the abrupt changes of the building shape and the flow effect of the incoming wind.In the design process,attention should be paid to the surface wind resistance performance of the corresponding area.

关 键 词：高层建筑 风压 风洞试验 折减系数 

分 类 号：TU974[建筑科学—建筑技术科学]