Aeroelastic Wind Tunnel Testing on the Wind-Induced Dynamic Reaction Response of Transmission Line
Publication: Journal of Aerospace Engineering
Volume 34, Issue 1
Abstract
An overhead transmission line system is a typical wind-sensitive structure with high flexibility, light weight, and low structural damping. Wind-induced dynamic reaction of the transmission line system is a determining factor in structural design of the supporting tower. In this study, we employ a closed-form solution and a series of wind tunnel tests to investigate three-dimensional dynamic reaction of transmission lines bundled with an insulator in three types, including I-type, V-type, and strain-type. The response comprises the background and resonant component. It is found that the background component constitutes a major part of the response, and the resonant component is closely related to the first symmetric out-of-plane mode. Furthermore, the closed-form solution is discussed and validated by the aeroelastic wind tunnel testing in the frequency domain. Based on the experimental data, this study provides a theoretical method for predicting wind-induced loads on transmission tower structures.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work is supported in part by National Natural Science Foundation of China (Grant Nos. 51478373, 51878527, and 51720105005), and Science and Technology Foundation of China Southern Power Grid Co. LTD. (Grant No. ZBKJXM20180164). These supports are greatly acknowledged.
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Published In
Journal of Aerospace Engineering
Volume 34 • Issue 1 • January 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Jun 15, 2020
Accepted: Aug 20, 2020
Published online: Oct 29, 2020
Published in print: Jan 1, 2021
Discussion open until: Mar 29, 2021
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