台风与微地形综合影响下的500kV输电铁塔倒塌分析

张宏杰; 罗克伟; 李扬森; 翁兰溪

doi:10.13204/j.gyjzG22070403

台风与微地形综合影响下的500kV输电铁塔倒塌分析

doi: 10.13204/j.gyjzG22070403

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

基金项目:

国家电网公司科技项目(GCB17202000122)。

详细信息

作者简介:
张宏杰,男,1981年出生,博士。电子信箱:75790868@qq.com

计量
- 文章访问数: 84
- HTML全文浏览量: 8
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2022-07-04
- 网络出版日期: 2023-07-01

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

1. China Electric Power Research Institute, Beijing 100055, China;
2. State Gird Fujian Electric Power Co., Ltd., Fuzhou 350003, China;
3. Fujian Electric Power Survey & Design Institute Co., Ltd., Fuzhou 350003, China

摘要

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。
- 倒塌分析 /
- 风速加速比 /
- CFD数值仿真 /
- 破坏形态 /
- 输电铁塔
Abstract: 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 high-voltage transmission line to against typhoon.
- collapse analysis /
- wind speed-up ratio /
- CFD numerical simulation /
- failure mode /
- transmission tower

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