STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION

JIA Jianjun; LIU Chunkui; JIE Lianbin; SHU Qianjin; ZHONG Chongshuo; YUAN Guanglin

doi:10.13204/j.gyjzG21041302

Volume 51 Issue 7

Nov. 2021

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JIA Jianjun, LIU Chunkui, JIE Lianbin, SHU Qianjin, ZHONG Chongshuo, YUAN Guanglin. STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(7): 123-128. doi: 10.13204/j.gyjzG21041302

Citation:

JIA Jianjun, LIU Chunkui, JIE Lianbin, SHU Qianjin, ZHONG Chongshuo, YUAN Guanglin. STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(7): 123-128. doi: 10.13204/j.gyjzG21041302

Citation:

JIA Jianjun, LIU Chunkui, JIE Lianbin, SHU Qianjin, ZHONG Chongshuo, YUAN Guanglin. STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(7): 123-128. doi: 10.13204/j.gyjzG21041302

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STUDY ON ANTI-GROUND-DEFORMATION CAPACITY OF TRANSMISSION TOWER LINE SYSTEMS IN MINING AREAS IN DIFFERENT DIRECTIONS SUBJECTED TO HORIZONTAL GROUND DEFORMATION

doi: 10.13204/j.gyjzG21041302

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

Received Date: 2021-04-13
Available Online: 2021-11-11

Abstract

Abstract

To evaluate the threat of horizontal surface deformation caused by mining to the safety of transmission lines, a typical 220 kV transmission tower line system was taken as the research object and its finite element model was constructed by ANSYS. Considering the types of horizontal surface deformation, and directions, the change laws of forces in the tower members were analyzed, and the relations of the failure mode of the tower and the earth's surface horizontal deformation were revealed. The results showed that the buckling of the cross braces and horizontal braces in or near the first diaphragm-bracing plane was the main failure sign of the tower subjected to horizontal surface deformation. The directions of the horizontal ground deformation had a significant impact on the failure modes and deformation resistance of the tower. Compared with the horizontal ground deformation along the line or perpendicular to the line, when the horizontal ground deformation occured at an oblique angle to the line, the anti-ground-deformation capacity of the tower was significantly reduced, and the minimum capacity was at an oblique angle of 45 degrees.
- mining area,
- transmission tower line system,
- surface deformation,
- FEA,
- deformation resistance

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References(12)

References

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