台风与微地形综合影响下的500 kV输电铁塔倒塌分析  

Collapse Analysis of a 500 kV Transmission Tower Under the Combined Action of Typhoon and Microtopography

作　　者：张宏杰 罗克伟 李扬森 翁兰溪[3] ZHANG Hongjie;LUO Kewei;LI Yangsen;WENG Lanxi(China Electric Power Research Institute,Beijing 100055,China;State Gird Fujian Electric Power Co.,Ltd.,Fuzhou 350003,China;Fujian Electric Power Survey&Design Institute Co.,Ltd.,Fuzhou 350003,China)

机构地区：[1]中国电力科学研究院有限公司,北京100055 [2]国网福建省电力有限公司,福州350003 [3]福建省电力勘测设计院有限公司,福州350003

出　　处：《工业建筑》2023年第4期29-34,93,共7页Industrial Construction

基　　金：国家电网公司科技项目(GCB17202000122)。

摘　　要：研究了台风“莫兰蒂”过境厦门时,500 kV漳泉Ⅱ路输电铁塔在风速、风向、微地形风速加速比三者共同作用下的受力状态与倒塌成因。基于历史气象数据和铁塔破坏形态,确定了最有可能导致铁塔倒塌的风速、风向输入条件;基于CFD仿真分析,确定了倒塔塔位处24个风向角下的风速加速比,分析了两个符合现场破坏形态的风向角下铁塔主材、斜材应力,明确了输电铁塔破坏形态同风速、风向和风速加速比的内在联系,指出了福建沿海高电压等级输电线路抗台风设计时,也应当综合考虑风速、风向以及山区微地形广泛存在的风速加速比的影响。The stress state and collapse cause of transmission tower of 500 kV Zhangquan line II under the combined action of wind speed,wind direction,and micro terrain wind speed-up ratio were studied when Typhoon Meranti passed Xiamen.Based on the historical meteorological data and the destruction pattern of the tower,the input conditions of wind speed and direction which were most likely to cause the tower to collapse were determined.Based on CFD simulation analysis,the wind speed-up ratio of 24 wind angles at the inverted tower position was determined,and the stress of main members and inclined members under two wind angles conforming to the site failure pattern was analyzed,and the internal relation between the failure pattern of transmission tower and wind speed,wind direction and wind speed-up ratio were clarified.The influence of wind speed,wind direction and wind speed-up ratio which widely existing in mountainous region should be considered comprehensively in the design of Fujian coastal highvoltage transmission line to against typhoon.

关 键 词：倒塌分析 风速加速比 CFD数值仿真 破坏形态 输电铁塔 

分 类 号：TM75[电气工程—电力系统及自动化]