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

LIU Jianhong; YANG Bo; JIE Lianbin; SHU Qianjin; ZHONG Chongshuo; YUAN Guanglin

doi:10.13204/j.gyjzG21080302

Volume 51 Issue 11

Mar. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(11): 90-99

Wang Chun-fen, Niu Di-tao, Dong Zhen-ping. STUDY ON DURABILITY OF COVER CONCRETE FOR RAILWAY BRIDGES IN ARID REGIONS[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(4): 65-67,92. doi: 10.13204/j.gyjz200604019

Citation:

LIU Jianhong, YANG Bo, JIE Lianbin, SHU Qianjin, ZHONG Chongshuo, YUAN Guanglin. BEARING PERFORMANCES AND SAFETY ASSESSMENT OF TRANSMISSION TOWER-LINE SYSTEMS IN MINING AREAS UNDER SURFACE HORIZONTAL DEFORMATION AND BOUNDARY LAYER WIND[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 90-99. doi: 10.13204/j.gyjzG21080302

Wang Chun-fen, Niu Di-tao, Dong Zhen-ping. STUDY ON DURABILITY OF COVER CONCRETE FOR RAILWAY BRIDGES IN ARID REGIONS[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(4): 65-67,92. doi: 10.13204/j.gyjz200604019

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

doi: 10.13204/j.gyjzG21080302

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

Received Date: 2021-08-03
Available Online: 2022-03-29

Abstract

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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References(24)

References

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