Wind Vibration Response and Wind Resistance of Suspension Towers with Large Height Difference in Mountainous Areas

Yutong Pang; Meigen Cao; Lulin Zhan; Zhanglong Chen

doi:10.13206/j.gjgS22082202

Volume 38 Issue 7

Jul. 2023

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Yutong Pang, Meigen Cao, Lulin Zhan, Zhanglong Chen. Wind Vibration Response and Wind Resistance of Suspension Towers with Large Height Difference in Mountainous Areas[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(7): 22-28. doi: 10.13206/j.gjgS22082202

Citation:

Yutong Pang, Meigen Cao, Lulin Zhan, Zhanglong Chen. Wind Vibration Response and Wind Resistance of Suspension Towers with Large Height Difference in Mountainous Areas[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(7): 22-28. doi: 10.13206/j.gjgS22082202

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Wind Vibration Response and Wind Resistance of Suspension Towers with Large Height Difference in Mountainous Areas

doi: 10.13206/j.gjgS22082202

1. School of Civil Engineering, North China University of Technology, Beijing 100144, China;
2. Wenzhou Electric Power Construction Co., Ltd., Wenzhou 325024, China

Received Date: 2022-08-22

Abstract

Abstract

Transmission towers are a class of highly flexible wind-sensitive structures, especially for transmission lines established in mountainous areas, where the towers are located in locations with large topographic and geomorphic variability, often with large height differences between towers, resulting in complex structural response of the tower-line system under wind loads. A typical transmission line section with large height difference in the coastal mountains of Wenzhou is used as the research object. Ansys software is used to establish a finite element model of two towers and three lines, and the dynamic characteristics of bare towers and tower line system are studied. The wind vibration response of bare towers and tower line system under 0° and 90° wind angle is analyzed, and the wind resistance of towers with different wind angles under design wind speed is evaluated. By analyzing the wind vibration response characteristics of the transmission tower at the top of the mountain and the internal force of the main material of the tower, the stress response law of the main material of the transmission tower with large height difference in mountainous areas is obtained, and the influence characteristics of the terrain height difference on the stress of the main material of the tower are mastered. The study shows that, in the case of constant horizontal gear distance, the greater the height difference between the two towers, the main material stress in the high tower shows a rapid increase trend, and the risk of wind collapse and damage of the tower located in the top of the mountain tower than that of the valley tower.
- large height difference in mountainous areas,
- transmission line,
- tension-resistant section,
- suspension tower,
- wind vibration response,
- wind resistance

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References(21)

References

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