串列三圆柱平均风压和平均阻力的干扰效应  

INTERFERENCE EFFECTS ON THE AVERAGE WIND PRESSURE AND AVERAGE DRAG FORCE IN TANDEM THREE CIRCULAR CYLINDERS

作　　者：王世博 刘夕强 刘小兵 WANG Shi-bo;LIU Xi-qiang;LIU Xiao-bing(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Wind Engineering Research Center,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]石家庄铁道大学风工程研究中心,石家庄050043 [3]河北省风工程和风能利用工程技术创新中心,石家庄050043

出　　处：《工程力学》2020年第S01期261-264,306,共5页Engineering Mechanics

基　　金：河北省自然科学基金项目(E2018210105);河北省高等学校科学技术研究项目(ZD2019118);河北省大型基础设施防灾减灾协同创新中心资助项目。

摘　　要：为了给实际工程中串列三圆柱结构的风荷载取值提供参考,通过刚性模型测压风洞试验方法,测试了12个不同间距比L/D(L为两圆柱中心之间的距离,D为圆柱的直径)下串列三圆柱的平均风压系数和平均阻力系数,并与单圆柱的平均风压系数和平均阻力系数进行了对比。研究结果表明:串列三圆柱存在临界间距,其临界间距比为3.0≤L/D≤3.5。三个圆柱的平均阻力均小于单圆柱的平均阻力;上游圆柱的平均阻力最大,下游圆柱的平均阻力次之,中游圆柱的平均阻力最小。To provide a reference for the wind load of a tandem three circular cylinders structure in an actual engineering project,12 different spacing ratios L/D were tested by using a rigid model pressure wind tunnel test method,where L is the distance between the centers of two circular cylinders and D is the diameter of the circular cylinder.The average wind pressure coefficient and average drag force coefficient of the three circular cylinders in series were compared with the average wind pressure coefficient and average drag force coefficient of a single circular cylinder.The results show that there are critical spacings in the tandem three circular cylinders,and the critical spacing ratio is 3.0≤L/D≤3.5.The average drag force of the three circular cylinders is smaller than that of a single circular cylinder.The average drag force of the upstream circular cylinder is the largest,that of the downstream circular cylinder is the second largest,and that of the middle circular cylinder is the smallest.

关 键 词：串列三圆柱 干扰效应 风洞试验 平均风压 平均阻力 

分 类 号：TU312.1[建筑科学—结构工程]