Wind Tunnel Test on the Effect of guy Pretension on Mechanical Properties of UHV Cross-Rope Suspension Tower-Line

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (13) : 163-168.

Yu Deng-ke 1 Li Zheng-liang 1 Shi Jing-hua2 Yan zhi-tao1 Xiao Zheng-zhi1

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Abstract

The effect of guy initial tension on wind-resistant performance of the ±800kV direct current (DC) cross-rope suspension tower-line is investigated through an aero-elastic model test in a boundary layer wind tunnel. Three kinds of guy initial tensions (15%, 20%, and 25% of the ultimate stress) were selected. The results show that the changes of guy initial tension have a significant influence on mechanical properties of tower-line system under wind load condition. There is a nonlinear-relationship influence on tension in guys and compression in masts. Thus the guy initial tension should be selected optimally.

Key words

guy pretension / cross-rope suspension tower / aero-elastic model / wind tunnel test / wind-induced responses

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Yu Deng-ke 1 Li Zheng-liang 1 Shi Jing-hua2 Yan zhi-tao1 Xiao Zheng-zhi1. Wind Tunnel Test on the Effect of guy Pretension on Mechanical Properties of UHV Cross-Rope Suspension Tower-Line[J]. Journal of Vibration and Shock, 2015, 34(13): 163-168

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