Wind and Structures

  • 제34권4호
  • /
  • Pages.335-353
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  • 2022
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic response of an overhead transmission tower-line system to high-speed train-induced wind

  • Zhang, Meng (School of Civil Engineering, Zhengzhou University) ;
  • Liu, Ying (School of Civil Engineering, Zhengzhou University) ;
  • Liu, Hao (School of Civil Engineering, Zhengzhou University) ;
  • Zhao, Guifeng (School of Civil Engineering, Zhengzhou University)
  • 투고 : 2021.10.06
  • 심사 : 2022.03.11
  • 발행 : 2022.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The current work numerically investigates the transient force and dynamic response of an overhead transmission tower-line structure caused by the passage of a high-speed train (HST). Taking the CRH2C HST and an overhead transmission tower-line structure as the research objects, both an HST-transmission line fluid numerical model and a transmission tower-line structure finite element model are established and validated through comparison with experimental and theoretical data. The transient force and typical dynamic response of the overhead transmission tower-line structure due to HST-induced wind are analyzed. The results show that when the train passes through the overhead transmission tower-line structure, the extreme force on the transmission line is related to the train speed with a significant quadratic function relationship. Once the relative distance from the track is more than 15 m, the train-induced force is small enough to be ignored. The extreme value of the mid-span dynamic response of the transmission line is related to the train speed and span length with a significant linear functional relationship.

키워드

과제정보

This work was sponsored by the Natural Science Foundation of Henan (grant no. 222300420549), the National Natural Science Foundation of China (grant no. 51578512), and the Cultivating Fund Project for Young Teachers of Zhengzhou University (grant no. JC21539028).

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