Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River

LUO Kerong; YU Liang; SHU Ganping; LI Buhui; NING Shuaipeng

doi:10.13204/j.gyjzG21121615

Volume 52 Issue 8

Aug. 2022

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LUO Kerong, YU Liang, SHU Ganping, LI Buhui, NING Shuaipeng. Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 1-8. doi: 10.13204/j.gyjzG21121615

Citation:

LUO Kerong, YU Liang, SHU Ganping, LI Buhui, NING Shuaipeng. Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 1-8. doi: 10.13204/j.gyjzG21121615

Citation:

LUO Kerong, YU Liang, SHU Ganping, LI Buhui, NING Shuaipeng. Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 1-8. doi: 10.13204/j.gyjzG21121615

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Analysis of Wind-Induced Response of a 500 kV Long-Span Transmission Tower-Line System Crossing the Yangtze River

doi: 10.13204/j.gyjzG21121615

1. The Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Nanjing 211189, China;
2. School of Civil Engineering, Southeast University, Nanjing 211189, China;
3. Jiangsu Power Design Institute Co., Ltd. of CEEC, Nanjing 211102, China

Received Date: 2021-12-16
Available Online: 2022-12-01

Abstract

Abstract

The long-span transmission tower-line system combines the characteristics of long-span, towering and flexibility, which is extremely sensitive to wind loads. Due to the coupling of the transmission wires, insulators and the spanning tower, its dynamic characteristics and wind-induced response are more complex. Taking the world’s tallest 500 kV transmission tower crossing the Yangtze River as an example, finite element models of single tower and tower-line system were established based on ABAQUS. The dynamic characteristics of single tower and tower-line systems were studied, and wind-induced vibration response together with wind-induced vibration coefficients were analyzed based on the results of wind load time-history analysis. The results showed the natural vibration frequency of the tower in transmission tower line system was less than that of single tower. Under different wind attack angles, the displacement of the tower line system at the apex of the tower was larger than that of a single tower, and the acceleration response was smaller.The weighted average value of wind-vibration coefficient calculated in the current code was greater than the time-history analysis results, which was partial to safety. However, the wind load in the concrete pouring area of main stressed tube might be underestimated, and the sudden change of wind-vibration coefficients caused by the change of mass and shape at the cross arm was not considered.
- long-span,
- tower-line system,
- wind-induced response,
- wind-induced vibration coefficient

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References(21)

References

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