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Steel and Composite Structures Volume 52, Number 4, August 25 2024 , pages 461-473 DOI: https://doi.org/10.12989/scs.2024.52.4.461 |
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A data-driven method for the reliability analysis of a transmission line under wind loads |
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Xing Fu, Wen-Long Du, Gang Li, Zhi-Qian Dong and Hong-Nan Li
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| Abstract | ||
| This study focuses on the reliability of a transmission line under wind excitation and evaluates the failure probability using explicit data resources. The data-driven framework for calculating the failure probability of a transmission line subjected to wind loading is presented, and a probabilistic method for estimating the yearly extreme wind speeds in each wind direction is provided to compensate for the incompleteness of meteorological data. Meteorological data from the Xuwen National Weather Station are used to analyze the distribution characteristics of wind speed and wind direction, fitted with the generalized extreme value distribution. Then, the most vulnerable tower is identified to obtain the fragility curves in all wind directions based on uncertainty analysis. Finally, the failure probabilities are calculated based on the presented method. The simulation results reveal that the failure probability of the employed tower increases over time and that the joint probability distribution of the wind speed and wind direction must be considered to avoid overestimating the failure probability. Additionally, the mixed wind climates (synoptic wind and typhoon) have great influence on the estimation of structural failure probability and should be considered. | ||
| Key Words | ||
| mixed wind climate; reliability analysis; transmission tower; uncertainty analysis; wind load | ||
| Address | ||
| Xing Fu:Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, 2 Linggong road, Ganjingzi district, Dalian, Liaoning, China Wen-Long Du:Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, 2 Linggong road, Ganjingzi district, Dalian, Liaoning, China Gang Li:Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, 2 Linggong road, Ganjingzi district, Dalian, Liaoning, China Zhi-Qian Dong:Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, 2 Linggong road, Ganjingzi district, Dalian, Liaoning, China Hong-Nan Li:1)Dalian University of Technology, State Key Laboratory of Coastal and Offshore Engineering, 2 Linggong road, Ganjingzi district, Dalian, Liaoning, China 2)Shenyang Jianzhu University, School of Civil Engineering, 25 Middle Hunnan Road, Hunnan district, Shenyang, Liaoning, China | ||