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Finite Element Analysis Based on Tower-line System of Ice-covering Reinforcement of Transmission Towers
Author(s): 
Pages: 78-81
Year: Issue:  11
Journal: Guangdong Electric Power

Keyword:  输电塔塔-线体系输电线覆冰有限元分析加固改造稳定性计算;
Abstract: 为了解决输电线路覆冰后输电塔荷载增加引发的倒塔等问题,以国内南方某山区500 kV线路为例,建立了塔-线体系有限元模型,在对塔-线体系进行覆冰有限元分析确定薄弱环节的基础上,有针对性地加固改造并对其进行了抗风能力评估.分析结果表明,在确定输电塔薄弱环节的基础上,采用组合截面构件加固,通过逐次加固的方法有利于有效提高线路覆冰极限,改善其抗风稳定性.
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