脉动风作用下输电塔线体系抗风性能研究  

Study on Wind Resistance Performance of Power Transmission Tower-line System Under Fluctuating Wind

作　　者：高伟 豆河伟 张明 陈轩 李曰兵[3] GAO Wei;DOU Hewei;ZHANG Ming;CHEN Xuan;LI Yuebing(Shanxi Chengxin Electric Power Engineering Supervision Company Limited.,Xian 710065,China;State Grid Yulin Power Supply Company,Yulin 719000,China;Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]陕西诚信电力工程监理有限责任公司,西安710065 [2]国网榆林供电公司,陕西榆林719000 [3]东北电力大学,吉林吉林132012

出　　处：《吉林电力》2022年第4期41-44,共4页Jilin Electric Power

摘　　要：为了提升输电线路安全性,以某110 kV输电线路大风引起的铁塔倒塌事故为例,用通用有限元软件建立输电塔线体系有限元模型,分析脉动风荷载作用下铁塔的极限承载力,判断输电塔在风荷载作用下的薄弱部位。结果表明,塔线体系在平均风速达到27.5 m/s时铁塔发生破坏,此时塔身第三段受压侧主材处出现明显失稳变形,在抗风加固设计时应予以重点考虑。In order to improve the safety of transmission lines, a tower collapse accident caused by strong wind on a 110 kV transmission line is taken as an example. A tower-line finite element model(FEM) simulating the focused tower was created using general FEM software, and the ultimate capacity and the weak position of the tower was analyzed by considering the wind as fluctuating. The results illustrated that the tower-line system was destroyed when the wind speed was 27.5 m/s, with an obvious deformation of the main angle material at compressed side of the third section of the tower, which indicated that this part should be considered during retrofitting design for the tower.

关 键 词：输电线路 塔线体系 脉动风 抗风 承载力 

分 类 号：TM753[电气工程—电力系统及自动化]