Nguyen, D.T.; Vo, D.H. Further Explanation on the Excitation Mechanism of Stay Cable Vibration in Dry Conditions. Buildings2023, 13, 1543.
Nguyen, D.T.; Vo, D.H. Further Explanation on the Excitation Mechanism of Stay Cable Vibration in Dry Conditions. Buildings 2023, 13, 1543.
Nguyen, D.T.; Vo, D.H. Further Explanation on the Excitation Mechanism of Stay Cable Vibration in Dry Conditions. Buildings2023, 13, 1543.
Nguyen, D.T.; Vo, D.H. Further Explanation on the Excitation Mechanism of Stay Cable Vibration in Dry Conditions. Buildings 2023, 13, 1543.
Abstract
This article presents a study conducted within a wind tunnel to enhance understanding of the excitation mechanism of stay cable vibration under arid conditions. Numerous wind tunnel tests were meticulously analyzed. Initially, the vibration of the stay cable was measured under steady flow conditions at a flow angle of 45 degrees and an inclination of 25 degrees, while varying wind velocities were applied. Additionally, an investigation into the flow field surrounding the stay cable was conducted in both vertical and horizontal directions. By utilizing two hot wire anemometers in the cable wake, an extensive database of flow field measurements was obtained. The experimental results revealed that the vibration characteristics of the stay cable under the arid conditions considered in this study aligned with findings reported in existing literature. Notably, a deeper comprehension of the excitation mechanism of a stay cable in a dry state was attained. This mechanism is closely associated with the inhibition of Karman vortices and the development of low-frequency vortices. At low wind speeds, Karman vortices predominated, resulting in small-amplitude vibrations. However, as the wind speed increased, the influence of Karman vortices diminished progressively, while the low-frequency vortices grew stronger. These low-frequency vortices exhibited high energy and a significant correlation with shedding along the stay cable, thereby inducing cable vibration in a dry environment.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
