串列圆角三角形双塔建筑风荷载干扰效应  

WIND LOAD INTERFERENCE EFFECT OF TWIN TOWER BUILDINGS WITH ROUNDED CORNERS AND ARC-EDGES TRIANGULAR CROSS-SECTION IN TANDEM ARRANGEMENT

作　　者：ABDIRAZAK FOZI 陈水福[1] 缪海悦 陈星 ABDIRAZAK FOZI;CHEN Shuifu;MIAO Haiyue;CHEN Xing(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058

出　　处：《低温建筑技术》2024年第1期46-50,共5页Low Temperature Architecture Technology

摘　　要：为探讨处于串列布置的圆角弧边三角形双塔高层建筑的风荷载干扰效应,采用风洞试验方法研究了双塔相对间距及风向偏转对受扰建筑平均层阻力和升力系数及顺风向和横风向基底脉动弯矩功率谱特性的影响。结果显示上游建筑的存在使受扰建筑的平均阻力和升力系数都小于单体建筑,且随双塔间距减小更为显著,较小的风向偏转对其影响不大。上游施扰建筑会使受扰建筑的基底弯矩谱能量由低频向高频转移,并产生新的谱峰,对横风向弯矩其谱峰在相对间距为3时最大;当风向偏移至接近弧面迎风时,能量转移基本消失。研究成果可为同类建筑的抗风设计提供理论依据。This paper investigates the wind load interference effects on twin tower high-rise buildings with rounded corners and arc-edges triangular cross-sections arranged in tandem.The wind tunnel testing technique is used to study the impact of relative spacing distance between the towers and the deviation in wind direction on the mean drag and lift coefficients,as well as the power spectral characteristics of the base moment in the along-wind and across-wind directions of the disturbed building.The results show that the presence of the upstream building reduc⁃es the mean drag and lift coefficients of the disturbed building compared to an individual building,which is more pronounced as the spacing between the towers decreases,and minor deviations in wind direction have little effect on it.The upstream disturbing building causes the energy of the base moment spectrum of the disturbed building to shift from low to high frequency,generating new spectral peaks.For the across-wind moment,this spectral peak is maximized when the relative spacing is 3.When the wind direction shifts towards the arc surface facing the wind,the energy shift essentially disappears.The research results may provide theoretical basis for wind resistance design of similar buildings.

关 键 词：风洞试验 双塔建筑 圆角弧边三角形 干扰效应 

分 类 号：TU312[建筑科学—结构工程]