采动区输电塔线体系在地表水平变形和边界层风作用下的承载性能及安全性评价

刘建红; 杨波; 节连彬; 舒前进; 仲崇硕; 袁广林

doi:10.13204/j.gyjzG21080302

采动区输电塔线体系在地表水平变形和边界层风作用下的承载性能及安全性评价

doi: 10.13204/j.gyjzG21080302

1. 国网阳泉供电公司, 山西阳泉 045000;
2. 中国矿业大学, 江苏徐州 221116

基金项目:

国网山西省电力公司科技项目(SGSXYQ00XTJS2000155)。

详细信息

作者简介:
刘建红,男,1980年出生,高级技师。

通讯作者:
舒前进,男,1978年出生,博士,副教授,shu-qianjin@cumt.edu.cn。

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- 文章访问数: 110
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- 被引次数: 0
出版历程
- 收稿日期: 2021-08-03
- 网络出版日期: 2022-03-29

BEARING PERFORMANCES AND SAFETY ASSESSMENT OF TRANSMISSION TOWER-LINE SYSTEMS IN MINING AREAS UNDER SURFACE HORIZONTAL DEFORMATION AND BOUNDARY LAYER WIND

1. State Grid Yangquan Power Supply Company, Yangquan 045000, China;
2. China University of Mining and Technology, Xuzhou 221116, China

摘要

摘要: 以位于采动区的典型220 kV输电塔线体系为研究对象,运用ANSYS软件建立了塔线体系的有限元模型,研究了不同方向的边界层风作用下的铁塔控制点的位移时程、关键斜向支撑构件和主要受力构件的应力时程,分析了地表水平变形方向、变形程度大小以及边界层风的风向角与铁塔关键主要受力构件的最大等效应力的相关关系。结果表明:在地表水平变形和边界层风作用下,主要受力构件是决定铁塔抗地表变形和抗风安全性的关键杆件;铁塔位移控制点的位移在正常运行的允许范围内;地表水平变形的最不利作用方向是30°;边界层风的最不利作用方向是30°和45°;铁塔主要受力构件最大等效应力和地表变形的大小之间存在着线性关系。在此基础上,得到了输电铁塔主要受力构件最大等效应力和地表水平变形方向、水平变形程度的相关关系,提出了一种采动区输电线路在地表水平变形和边界层风作用下的安全性评估方法。
- 采动区 /
- 输电塔线体系 /
- 地表水平变形 /
- 边界层风 /
- 安全性评价
Abstract: Taking a typical 220 kV transmission tower-line system located in the mining area as the research object, the finite element model of the tower-line system was constructed by ANSYS software. The displacement time history of the control points of the tower and the stress time history of key crossed bracing members and tower legs under the action of boundary layer wind in different directions were studied. The relations between the maximum equivalent stress of legs of the tower and the surface horizontal deformation direction, the deformation degree, and the wind direction angle of boundary layer were analyzed. The results showed that the four leg members were the key members to determine the safety of tower against surface deformation and wind under the action of surface horizontal deformation and boundary layer wind. The displacement of the tower displacement control points were within the allowable range of normal operation. The most unfavorable action direction of surface horizontal deformation was 30°. The most unfavorable directions of boundary layer wind were 30° and 45°. There was a linear relation between the maximum equivalent stress of leg members of the tower and the degree of surface deformation. On this basis, the correlations between the maximum equivalent stress of leg members of the tower and the direction and degree of surface horizontal deformation were obtained, and a safety assessment method of the transmission tower-line system in mining area under the action of surface horizontal deformation and boundary layer wind was proposed.
- mining area /
- transmission tower-line system /
- ground surface horizontal deformation /
- boundary layer wind /
- safety assessment

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参考文献(24)

[1]	袁广林,刘涛,张先扬,等.复合地表变形对输电铁塔内力和变形的影响分析[J].建筑科学,2009,25(9):14-17.
[2]	袁广林,张云飞,陈建稳,等.塌陷区输电铁塔的可靠性评估[J].电网技术,2010,34(1):214-218.
[3]	SHU Q J,YUAN G L,GUO G L,et al.Limits to Foundation Displacement of an Extra High Voltage Transmission Tower in a Mining Subsidence Area[J].International Journal of Mining Science and Technology,2012,22(1):13-18.
[4]	SHU Q J,YUAN G L,HUANG Z H,et al.The Behaviour of the Power Transmission Tower Subjected to Horizontal Support's Movements[J].Engineering Structures,2016,123:166-180.
[5]	刘鲁杰.特高压输电铁塔结构分析及抗地表变形性能研究[D].徐州:中国矿业大学,2018.
[6]	叶盛.采动区110 kV输电铁塔抗地表变形及抗风性能研究[D].徐州:中国矿业大学,2015.
[7]	SHU Q J,HUANG Z H,YUAN G L,et al.Impact of Wind Loads on the Resistance Capacity of the Transmission Tower Subjected to Ground Surface Deformations[J].Thin-Walled Structures,2018,131:619-630.
[8]	仲崇硕.地表变形作用下输电塔线体系的风振响应和承载性能研究[D].徐州:中国矿业大学,2019.
[9]	谢强,李杰.电力系统自然灾害的现状与对策[J].自然灾害学报,2006(4):126-131.
[10]	张勇.输电线路风灾防御的现状与对策[J].华东电力,2006(3):28-31.
[11]	YASUI H,MARUKAWA H,MOMOMURA Y,et al.Analytical Study on Wind-Induced Vibration of Power Transmission Towers[J].Journal of Wind Engineering & Industrial Aerodynamics,1999,83(1/2/3):431-441.
[12]	BATTISTA R C,RODRIGUES R S,PFEIL M S.Dynamic Behavior and Stability of Transmission Line Towers Under Wind Forces[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91(8):1051-1067.
[13]	GANI F G,LEGERON F L.Dynamic Response of Transmission Lines Guyed Towers Under Wind Loading[J].Canadian Journal of Civil Engineering,2010,37(3):450-465.
[14]	谢华平,何敏娟.输电塔线体系风振响应分析[J].振动与冲击,2011,30(7):45-51.
[15]	张传才,郭强.输电塔线体系风振响应频域分析的一种简化方法[J].应用力学学报,2013(5):782-786.
[16]	郑敏,梁枢果,熊铁华.基于塔线体系风洞试验的输电塔风致响应计算[J].武汉理工大学学报,2013,35(11):124-131.
[17]	谢强,李继国,严承涌,等.1 000 kV特高压输电塔线体系风荷载传递机制风洞试验研究[J].中国电机工程学报,2013,33(1):109-116.
[18]	DENG H Z,XU H J,DUAN C Y,et al.Experimental and Numerical Study on the Responses of a Transmission Tower to Skew Incident Winds[J].Journal of Wind Engineering and Industrial Aerodynamics,2016,157:171-188.
[19]	付航.下击暴流作用下输电塔-线体系的稳定性分析[D].重庆:重庆大学,2016.
[20]	安旭文,王昊深,侯建国.国内外输电线路设计规范风荷载取值标准的比较[J].武汉大学学报(工学版),2011(6):740-743.
[21]	中华人民共和国住房和城乡建设部.建筑结构荷载规范:GB 50009-2012[S].北京:中国建筑工业出版社,2012.
[22]	中华人民共和国电力工业部.架空输电线路杆塔结构设计技术规定:DL/T 5154-2012[S].北京:中国计划出版社,2012.
[23]	中华人民共和国住房和城乡建设部.钢结构设计标准:GB 50017-2017[S].北京:中国建筑工业出版社,2018.
[24]	国家能源局.架空输电线路运行规程:DL/T 741-2019[S].2019.