实验流体力学Issue(2)：37-42,6.DOI:10.11729/syltlx20140060
分裂导线平均风荷载阻力系数干扰效应研究
Research on interference effects of wind load on bundled conductors
左太辉 1牛华伟 2闵绚 3华旭刚2
作者信息
- 1. 广东省建筑科学研究院集团股份有限公司，广州 510050
- 2. 湖南大学风工程试验研究中心，长沙 410082
- 3. 中国电力科学研究院，武汉 430074
- 折叠
摘要
Abstract
It is important to take into account the drag coefficient and interference shielding effect under different wind conditions in the design of bundled conductors.However,it is a com-plex problem under different wind angles and Reynolds numbers conditions.In this paper,wind tunnel test on a sectional conductor model with 1m long and 1:30 aspect ratio was firstly conduc-ted to investigate the influence of Reynolds number and wake effect on the mean drag coefficient of bundled conductors.Then,sectional model tests of 4-,6-and 8-bundled conductors under dif-ferent wind attack angles and velocities in the uniform flow were conducted to analyze the shiel-ding effect of drag coefficient of bundled conductors.The results indicate that the interference shielding effect is evident for multi-bundled conductors.In addition,the variation of the wind attack angle has great effect on the wind loads,the values of which are obviously smaller than that of the current design specification.Therefore,it is of great importance to pay attention to the influence of the wind attack angle and interference shielding on the wind load computation in the design of bundled conductors.关键词
风荷载/气动阻力系数/分裂导线/风洞试验/干扰屏蔽效应Key words
wind load/aerodynamic drag coefficient/bundled conductors/wind tunnel test/in-terference shielding effect分类
建筑与水利引用本文复制引用
左太辉,牛华伟,闵绚,华旭刚..分裂导线平均风荷载阻力系数干扰效应研究[J].实验流体力学,2015,(2):37-42,6.
