华中科技大学学报（自然科学版）2013，Vol.41Issue(4)：114-118,132,6.
角钢输电塔杆件风压及体型系数的风洞试验研究
Wind tunnel tests for wind load distribution and shape coefficient of angle-made-transmission towers
摘要
Abstract
An angle-made-transmission tower with 220 kV was researched. A 1: 2.5 large scale rigid section model was fabricated and the wind tunnel measuring pressure test was performed in homogeneous turbulence flow. The wind pressure distribution and shape coefficient along main members, oblique members and auxiliary members were obtained. The characteristic of wind load functioning on each member was induced, and the law of varying shape coefficient of each member s sections along with wind angle was summarized. It shows part of the angle steels which have both large drag and lift coefficients are under the action of double-direction distributed wind load in some specific wind directions. The standard value was compared with the tested value of the section model s shape coefficient. The result shows that the domestic standard value is smaller than the tested value which tends to be unsafe to structure design, while the foreign standard value well agrees with the tested value.关键词
输电塔/风洞试验/体型系数/节段模型/分布荷载/刚性模型Key words
transmission tower/ wind tunnel tests/ shape coefficient/ section model/ distributed load/ rigid model分类
建筑与水利引用本文复制引用
楼文娟,王东,沈国辉,金晓华..角钢输电塔杆件风压及体型系数的风洞试验研究[J].华中科技大学学报（自然科学版）,2013,41(4):114-118,132,6.基金项目
国家自然科学基金资助项目(51178424) （51178424）
