Research on Wind Resistant Reinforcement of In-Plane Cables of Transmission Line Tower and Influence of Design Parameters

CAO Meigen; ZHANG Ruoyu; ZHU Yunxiang; WANG Yu; KONG Fanfang; PAN Yiwei

Aug. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(8): 48-56

CAO Meigen, ZHANG Ruoyu, ZHU Yunxiang, WANG Yu, KONG Fanfang, PAN Yiwei. Research on Wind Resistant Reinforcement of In-Plane Cables of Transmission Line Tower and Influence of Design Parameters[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 48-56.

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Research on Wind Resistant Reinforcement of In-Plane Cables of Transmission Line Tower and Influence of Design Parameters

1. School of Civil Engineering, North China University of Technology, Beijing 100144, China;
2. School of Mechanics Engineering Science, Shanghai University, Shanghai 200444, China;
3. State Grid Zhejiang Electric Power Company, Hangzhou 310007, China;
4. State Grid Wenzhou Power Supply Company, Wenzhou 332500, China

Received Date: 2022-01-13
Available Online: 2022-12-01

Abstract

Abstract

Combined with the structural characteristics, wind-induced response characteristics and load characteristics of transmission tower, a wind resistant reinforcement technique and design method of in-plane cable of self-supporting transmission tower were proposed. Taking 330ZM3-40 tower collapsed in "Hagupit" typhoon in 2020 as the research object, the influence of prestress of cable on the internal force of components of tower and wind-induced vibration time history analysis were carried out. The influence of prestress, section area, damping coefficient and inclination of cable on wind-induced vibration control of tower was analyzed. The research showed that, through reasonable design, setting multi-layer in-plane crossing cables on the body of tower could effectively control the displacement response and internal force of the tower under wind load. The section area of cable was the key factor to ensure the wind-induced vibration control effect of transmission tower, and section area of cable should be greater than 100 mm²; the prestress of cable should not be greater than 150 MPa to ensure that the internal force increase-yield ratio of tower components did not exceed 5%; the angle of installation of cable was 40°-60°; in order to achieve better wind-induced vibration control effect, additional dampings for the cable system should be added with the reasonable value range 5%-20%.
- transmission tower,
- prestressed cable,
- wind vibration response,
- wind resistant reinforcement,
- influence of design parameters

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References(26)

References

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