台风作用下输电线路风振系数及抗风性能研究

doi:10.12068/j.issn.1005-3026.2022.07.001

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (7): 913-920.DOI: 10.12068/j.issn.1005-3026.2022.07.001

• 信息与控制 • 下一篇

台风作用下输电线路风振系数及抗风性能研究

付兴¹，杜文龙¹，郑帅²，李宏男^1,3

(1.大连理工大学建设工程学部，辽宁大连116024； 2.中国建筑第八工程局有限公司东北分公司，辽宁大连116021；3.沈阳建筑大学土木工程学院，辽宁沈阳110168)

发布日期:2022-08-02
通讯作者: 付兴
作者简介:付兴(1988-)，男，辽宁葫芦岛人，大连理工大学副教授；李宏男(1957-)，男，辽宁沈阳人，大连理工大学长江学者特聘教授，博士生导师.
基金资助:
国家自然科学基金资助项目(52078104)；大连市高层次人才创新支持计划项目(2020RQ056)；中央高校基本科研业务费专项资金资助项目(DUT21JC07) .

Research on Gust Response Factor and Wind-Resistance Performance of Transmission Lines Under Typhoon

FU Xing¹， DU Wen-long¹， ZHENG Shuai²， LI Hong-nan^1,3

1. Faculty of Infrastructures Engineering， Dalian University of Technology， Dalian 116024， China; 2. The Northeast Branch， China Construction Eighth Engineering Bureau Co.， Ltd.， Dalian 116021， China; 3. School of Civil Engineering， Shenyang Jianzhu University， Shenyang 110168， China.

Published:2022-08-02
Contact: FU Xing
About author:-
Supported by:
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摘要/Abstract

摘要： 为研究良态风与台风作用下的输电线路风振系数，以广东省国古线一铁塔为原型建立了有限元模型，采用谐波叠加法模拟了台风风场，并开展了动力分析.首先，对比了5种国内外设计规范的风振系数计算方法，发现各规范均未单独考虑台风的强脉动特性；然后，基于惯性力法获取了铁塔风振系数并揭示了塔线耦联效应的影响.最后，利用生死单元法定量评估了两种风场下输电线路的抗风性能.结果表明:台风的高湍流特性导致顺风向风振系数大于良态风对应值；导线可增大铁塔横风向基频，并使铁塔振型由单塔的弯曲型变为塔线体系的弯剪型，塔线体系横担处风振系数大于单塔；湍流度从0.14提高至0.20，临界倒塌风荷载降低约11%.因此，台风多发地区的输电塔设计应适当提高湍流度取值，必要时还应考虑塔线耦联效应.

关键词: 输电线路；风振系数；台风；塔线耦联效应；抗风性能评估

Abstract: To study the gust response factors(GRF) of transmission lines under normal wind and typhoon， a finite element model is established based on a steel tower of the Guogu line in Guangdong Province. The typhoon wind field is simulated via a harmonic superposition method， and the dynamic analysis is carried out. First， the GRF methods in five design codes at home and abroad are compared. It turns out that none of them considers the strong fluctuating characteristics of typhoon. Then， the GRF is obtained based on the inertia force method， and the tower-line coupling effect on GRF is studied. Finally， the wind-resistance performance of the transmission line under the two wind fields is quantitatively evaluated by the method of birth to death element. The results showed that the high turbulence characteristics of typhoons lead GRF to be greater than that of normal wind and the conductor can increase the natural frequency of the tower in the cross-wind direction， changing the mode from the bending type of a single tower to the bending-shear type of the tower-line system， whose GRF at the cross arm is greater than that of a single tower. The critical collapse wind load will decrease by 11% if the turbulence intensity increases from 0.14 to 0.20. Thus， the design of transmission towers in typhoon-prone areas should properly increase the turbulence intensity and take into account the tower-line coupling effect when necessary.

Key words: transmission line; gust response factor; typhoon; tower-line coupling effect; wind-resistance performance evaluation

中图分类号:

TM753

付兴，杜文龙，郑帅，李宏男. 台风作用下输电线路风振系数及抗风性能研究[J]. 东北大学学报（自然科学版）, 2022, 43(7): 913-920.

FU Xing， DU Wen-long， ZHENG Shuai， LI Hong-nan. Research on Gust Response Factor and Wind-Resistance Performance of Transmission Lines Under Typhoon[J]. Journal of Northeastern University(Natural Science), 2022, 43(7): 913-920.

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台风作用下输电线路风振系数及抗风性能研究

Research on Gust Response Factor and Wind-Resistance Performance of Transmission Lines Under Typhoon

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