串列双圆柱塔楼相邻干扰气动力特性试验研究  

EXPERIMENTAL STUDY ON AERODYNAMIC CHARACTERISTICS OF INTERFERENCE EFFECTS BETWEEN TWO CIRCULAR PLANE BUILDINGS IN A TANDEM ARRANGEMENT

作　　者：李航[1] 楼文娟[1] 章李刚 卞荣 LI Hang1, LOU Wenjuan1, ZHANG Ligang2, BIAN Rong3(1. Institute of Structural Engi., Zhejiang Univ., Hangzhou 310000, China;2. Zhejiang Huayun Electric Power Engi. Design ＆ Consulting Co., Ltd., Hangzhou 310000,China;3. State Grid Zhejiang Economic Research Institute, Hangzhou 310000,Chin)

机构地区：[1]浙江大学结构工程研究所,杭州310000 [2]浙江华云电力工程设计咨询有限公司,杭州310000 [3]国网浙江省电力公司经济技术研究院,杭州310000

出　　处：《低温建筑技术》2018年第7期45-50,共6页Low Temperature Architecture Technology

摘　　要：设计制作高径比为2的串列圆柱塔楼模型,在均匀流场(Iu=0)和均匀湍流场(Iu=8%)开展不同雷诺数(Re=1.73×10~5和Re=5.18×10~5)以及不同间距比下的同步测压风洞试验,得到前、后圆柱塔楼1/2高度处局部体型系数和干扰系数(IF)。结果表明:超临界均匀流场下,前后圆柱塔楼的局部体型系数在任意间距比下均大于二维串列圆柱相应值;风向下游处圆柱塔楼同样会影响上游圆柱塔楼的气动力;带有较高湍流度或雷诺数达到超临界区间的来流条件下,下游圆柱塔楼干扰系数大于1,建议对存在临近干扰且位于不利风向角下游处的圆柱形高层建筑体型系数进行修正。为实际工程中存在临近干扰的圆柱形高层建筑体型系数的取值提供了试验依据。Designing a tandem cylindrical tower model with an aspect ratio of 2. Wind tunnel tests based on synchronous pressure measurement technology were carried out in a smooth flow and in a uniform turbulent flow with different Reynolds numbers（Re=1.73×10~5 和 Re=5.18×10~5）and spacing ratios.Local drag coefficients at the 1/2 height of cylindrical buildings and interference factors（IF） were measured. The results show that in the smooth flow at supercritical Reynolds numbers, the local drag coefficients for tandem cantilevered cylinders are larger than those for two-demensional cylinders in the same arrangement. The downstream cylindrical buildings also affects the aerodynamic coefficients of upstream cylindrical buildings.The interference factor for downstream cylindrical buildings is larger than1 in the flow with high turbulence intensity or at supercritical Reynolds numbers. This paper suggests that the drag coefficients for circular plane high-rise buildings with adjacent disturbances should be modified. This paper provides experimental basis for the value of drag coefficients for cylindrical buildings with adjacent disturbances

关 键 词：圆柱塔楼 局部体型系数 干扰系数 湍流度 

分 类 号：TU311.3[建筑科学—结构工程]