Study of the Prevention Method of ±800 kV Transmission Tower Foundation Deviation

Xinsheng Dong, Guanru Wen, Mingguan Zhao, Yang Yang, Meng Li and Long Zhao ()
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Xinsheng Dong: Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, China
Guanru Wen: School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China
Mingguan Zhao: Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, China
Yang Yang: Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, China
Meng Li: Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830000, China
Long Zhao: School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China

Energies, 2023, vol. 16, issue 6, 1-17

Abstract: The stability of transmission tower bases is key to ensuring the safe operation of power lines. This paper proposes a joint displacement-control technique for foundation-inclined piles and prestressed foundation tie beams to address the problem of tower base displacement and durability degradation caused by environmental factors. A finite element model of an exposed-pile transmission tower conforming to the structural characteristics of the actual line tower was established based on the current situation of Tower 292 of the ±800 kV Tianzhong line in Xinjiang, China. Three different displacement-control schemes were analyzed under the combined effects of tower line load, ice-cover load, and wind load, including changing exposed pile height, changing inclined pile tilt angle, and increasing the prestressed foundation tie beam. The analysis shows that the combined displacement-control technology of foundation-inclined piles and prestressed foundation tie beams can reduce the horizontal displacement of EHV tower foundations by more than 50%, which greatly reduces safety problems caused by tower displacement and effectively improves tower durability.

Keywords: transmission tower; foundation deviation; finite element analysis; wind-driven response (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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