A study on wind-induced vibration characteristics of stay cables under surface-damaged state

被引：0
|
作者：
Liu Q. [1 ,2 ]
Sun Y. [3 ]
Jia Y. [1 ,2 ]
Zhang L. [3 ]
Ma W. [1 ,2 ]
Liu X. [1 ,2 ]
机构：
[1] Wind Engineering Research Center, Shijiazhuang Tiedao University, Shijiazhuang
[2] Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang
[3] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 08期
关键词：
Reynolds number; Stay cables; Surface-damaged; Wind direction; Wind-induced vibration;
D O I：
10.13465/j.cnki.jvs.2020.08.005
中图分类号：
学科分类号：
摘要：
During production, transportation, installation and operation, stay cables may surfer scratches and cracks. Studying wind-induced vibration characteristics of stay cables under surface damage is of great significance for accurately evaluating the aerodynamic stability of stay cables during their service life. Through wind tunnel tests of a smooth model and other models with 2 sizes of dent, the influences on wind-induced vibration characteristics of Reynolds number, wind direction and the size of dents were studied. And the vibration state was initially judged. Results show that the vibration characteristics with Reynolds number curve of the dent cable model is similar to that of the smooth model, but the maximum amplitudes of the dent cable model are larger than that of the smooth model in the worst wind directions. At the same wind direction, there are lower starting Reynolds number and wider Reynolds number interval of wind-induced vibration of dent models. Also, the size of dent influences wind-induced vibration characteristics prominently during test Reynolds number range, not a simple monotonous relation, but related to wind direction closely. This wind-induced vibration is initially judged to be galloping, not vortex-induced vibration, based on vibration frequency and Den Hartog criterion. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：33 / 39and71
页数：3938
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