输电塔风致倒塌破坏研究进展  

Research Progress on Wind-Induced Collapse of Transmission Towers

作　　者：周琦 王振华 ZHOU Qi;WANG Zhenhua(School of Urban Construction,Zhejiang Shuren University,Hangzhou 310015,Zhejiang,China)

机构地区：[1]浙江树人学院城建学院,浙江杭州310015

出　　处：《南方能源建设》2024年第6期59-68,共10页Southern Energy Construction

基　　金：浙江树人学院大学生创新创业训练计划项目(JXJ0223105);浙江树人学院引进人才科研启动项目(2022R051)。

摘　　要：[目的]输电塔是电力系统中关键的基础设施,输电塔风致倒塌将给电力系统带来重大损失。为了找出输电塔抗风致倒塌的解决方法,有必要对输电塔风致倒塌破坏的原因、影响因素、倒塌过程等进行研究。[方法]从事故分析、真型试验、风洞试验、数值模拟4方面对输电塔风致倒塌研究成果进行了回顾,分析和总结了相关研究成果,并给出了后续研究的建议。[结果]研究表明:输电塔风致倒塌的原因有输电塔塔身存在薄弱杆件、规范中输电线路风荷载计算存在缺陷、规范未考虑的极端风荷载等。[结论]建议围绕极端风荷载模型、横风向及扭转向风荷载的影响、单塔及塔线体系的精确模型、完善相关规范等方面开展研究。[Introduction]Transmission towers are crucial infrastructure in power systems,and their wind-induced collapse can cause significant losses to power systems.To find solutions to prevent wind-induced collapse of transmission towers,it is necessary to investigate the causes,contributing factors,and processes of wind-induced collapse.[Method]Research results on wind-induced collapse of transmission towers were reviewed from the perspectives of accident analysis,full-scale tests,wind tunnel tests,and numerical simulations.The relevant research results were analyzed and summarized,and recommendations for subsequent research were provided.[Result]The investigation revealed that the factors contributing to the wind-induced collapse of transmission towers include the presence of weak members in the tower body,defects in the calculation of wind loads on transmission lines in the code,and extreme wind loads not considered in the code.[Conclusion]It is recommended to research extreme wind load models,the impact of crosswind and torsional wind loads,accurate models of single tower and tower line systems,and improvement of relevant regulations in the code.

关 键 词：输电塔 风致倒塌 事故分析 真型试验 风洞试验 数值模拟 

分 类 号：TM75[电气工程—电力系统及自动化] TU312[建筑科学—结构工程]