Wind-Resistance and Failure Analyses of a Lightning-Damaged Transmission Tower
Publication: Journal of Performance of Constructed Facilities
Volume 32, Issue 1
Abstract
This paper estimates the wind-resistance of a lightning-damaged transmission tower. The buckling cause of a tower member under lightning excitation is reexamined through an overall tower model, and the modelling method of the lightning-damaged transmission tower is presented. The static wind-resistance of a transmission tower is estimated with the consideration of initial eccentricity and nonlinear behaviors of material and geometry, and two influencing parameters are discussed. According to the simulation results, the basic wind speed of collapse decreases dramatically due to lightning damage, and the collapse modes of the original and lightning-damaged towers are very different. As a consequence, more attention should be paid to lightning damage of transmission towers.
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Acknowledgments
This research was supported by the National Natural Science Foundation of China (Grant Nos. 51708089, 51421064, and 51778105) and the Fundamental Research Funds for the Central Universities [DUT17RC(3)007, DUT16RC(3)011].
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Published In
Journal of Performance of Constructed Facilities
Volume 32 • Issue 1 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Mar 15, 2017
Accepted: Jul 17, 2017
Published online: Nov 30, 2017
Published in print: Feb 1, 2018
Discussion open until: Apr 30, 2018
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