A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Studies on Wind‐Induced Fatigue Performance of Spacer Considering Galloping of Iced Conductors in Tall and Large‐Span Transmission Tower‐Line System
https://orcid.org/0000-0003-4672-6416
ABSTRACTTo investigate the influence of galloping on the fatigue performance of spacers in iced transmission lines, this study developed a coupled finite element model of a transmission tower‐quad‐bundled conductor‐spacer, along with a wind field model for quad‐bundled iced transmission lines, and the corresponding galloping loads are generated. A fatigue analysis method for spacers is proposed, and its fatigue performance and life under galloping conditions are assessed. Moreover, the influence of iced thickness and shape on spacer fatigue performance are analyzed. Results show that spacers connected to interphase spacers are most prone to fatigue damage during galloping. For crescent‐shaped iced, the highest fatigue damage occurs at a 10 mm iced thickness, 90° wind attack angle, and 10 m/s wind speed, with an average fatigue life of about 20 days. Dangerous spacers are located at the middle phase conductor for crescent, fan, and D‐shaped iced, with the most unfavorable wind attack angles being 90°, 0°, and 60°, and fatigue life of 13.35, 21.66, and 74.73 days, respectively. Spacer's fatigue damage increases with iced thickness, peaking at 10 mm. Crescent‐shaped iced causes the highest fatigue damage within the 30°–120° wind attack angle range, followed by fan‐shaped and D‐shaped iced. At 0° and 150°, fatigue damage values are similar for all iced shapes, while fan‐shaped iced results in the highest damage at 180°.
Studies on Wind‐Induced Fatigue Performance of Spacer Considering Galloping of Iced Conductors in Tall and Large‐Span Transmission Tower‐Line System
https://orcid.org/0000-0003-4672-6416
ABSTRACTTo investigate the influence of galloping on the fatigue performance of spacers in iced transmission lines, this study developed a coupled finite element model of a transmission tower‐quad‐bundled conductor‐spacer, along with a wind field model for quad‐bundled iced transmission lines, and the corresponding galloping loads are generated. A fatigue analysis method for spacers is proposed, and its fatigue performance and life under galloping conditions are assessed. Moreover, the influence of iced thickness and shape on spacer fatigue performance are analyzed. Results show that spacers connected to interphase spacers are most prone to fatigue damage during galloping. For crescent‐shaped iced, the highest fatigue damage occurs at a 10 mm iced thickness, 90° wind attack angle, and 10 m/s wind speed, with an average fatigue life of about 20 days. Dangerous spacers are located at the middle phase conductor for crescent, fan, and D‐shaped iced, with the most unfavorable wind attack angles being 90°, 0°, and 60°, and fatigue life of 13.35, 21.66, and 74.73 days, respectively. Spacer's fatigue damage increases with iced thickness, peaking at 10 mm. Crescent‐shaped iced causes the highest fatigue damage within the 30°–120° wind attack angle range, followed by fan‐shaped and D‐shaped iced. At 0° and 150°, fatigue damage values are similar for all iced shapes, while fan‐shaped iced results in the highest damage at 180°.
Studies on Wind‐Induced Fatigue Performance of Spacer Considering Galloping of Iced Conductors in Tall and Large‐Span Transmission Tower‐Line System
https://orcid.org/0000-0003-4672-6416
ABSTRACTTo investigate the influence of galloping on the fatigue performance of spacers in iced transmission lines, this study developed a coupled finite element model of a transmission tower‐quad‐bundled conductor‐spacer, along with a wind field model for quad‐bundled iced transmission lines, and the corresponding galloping loads are generated. A fatigue analysis method for spacers is proposed, and its fatigue performance and life under galloping conditions are assessed. Moreover, the influence of iced thickness and shape on spacer fatigue performance are analyzed. Results show that spacers connected to interphase spacers are most prone to fatigue damage during galloping. For crescent‐shaped iced, the highest fatigue damage occurs at a 10 mm iced thickness, 90° wind attack angle, and 10 m/s wind speed, with an average fatigue life of about 20 days. Dangerous spacers are located at the middle phase conductor for crescent, fan, and D‐shaped iced, with the most unfavorable wind attack angles being 90°, 0°, and 60°, and fatigue life of 13.35, 21.66, and 74.73 days, respectively. Spacer's fatigue damage increases with iced thickness, peaking at 10 mm. Crescent‐shaped iced causes the highest fatigue damage within the 30°–120° wind attack angle range, followed by fan‐shaped and D‐shaped iced. At 0° and 150°, fatigue damage values are similar for all iced shapes, while fan‐shaped iced results in the highest damage at 180°.
Studies on Wind‐Induced Fatigue Performance of Spacer Considering Galloping of Iced Conductors in Tall and Large‐Span Transmission Tower‐Line System
Structural Design Tall Build
Rong, Kunjie (author) / Tian, Li (author) / Wang, Xiaoyang (author) / Fan, Yuan (author) / Li, Na (author)
2025-02-25
Article (Journal)
Electronic Resource
English
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