@article{FU2026, 
author = {Jianming FU and Lijuan ZHANG and Yidan MA and Yongjie QI and Shiyuan LIU and Xiangrui MENG and Yuping LIU and Li TIAN},
title = {Wind-driven dynamic response of ice-covered long cross-bar transmission tower-line system in high altitude areas},
year = {2026},
journal = {Journal of Civil and Environmental Engineering},
volume = {48},
number = {2},
pages = {226-235},
keywords = {ice cover, high-altitude areas, long cross-bar, transmission tower-line system, wind-driven dynamic response},
url = {https://www.sciopen.com/article/10.11835/j.issn.2096-6717.2023.142},
doi = {10.11835/j.issn.2096-6717.2023.142},
abstract = {Transmission lines are vulnerable to impairment by a variety of disasters including high winds and ice cover, which pose a significant threat to energy security. At present, studies on wind and ice disasters on transmission lines are mostly focused on low-altitude areas.However, many west-east transmission lines cross vast plateau areas, in which long cross-bar transmission towers account for a larger proportion. In order to ensure the safe operation of transmission lines in high-altitude areas, this paper establishes a long cross-bar transmission tower-line system refined model relying on a ±800 kV UHV DC transmission project, based on the ice-covering conditions in high-altitude areas, ice-covered working conditions of transmission towers and transmission lines are established respectively. Concurrently, the wind load characteristics of high-altitude and low-altitude areas are compared and analyzed, taking into account the influence of environmental factors such as air density, topography and geomorphology in high-altitude areas. Finally, based on the ice-covering conditions and wind load characteristics in high-altitude areas, wind-induced vibration response analysis of the long crossbar transmission tower-line system is carried out. The findings indicate that the wind profile at elevated altitudes is comparatively gentle, the displacement response at the cross-bar of the long cross-bar transmission tower-line system is more pronounced than that at the tower's summit, and the maximum displacement response of the structure under ice-wind loads occurs at the midpoint of the cross-bar end.}
}