Pospíšil, Stanislav and Trush, Arsenii and Kuznetsov, Sergey and Kozmar, Hrvoje and Náprstek, Jiří (2016) Influence of wind angle of attack and isotropic turbulence on wind-induced vibrations of ice-accreted bridge cables. = Influence of wind angle of attack and isotropic turbulence on wind-induced vibrations of ice-accreted bridge cables. In: 8th International Colloquium on Bluff Body Aerodynamics and Applications, 07-11.06.2016., Northeastern University, Boston, Massachusetts, SAD.
Full text not available from this repository.Abstract
Bridge-supporting cables and mast guys with high flexibility and low damping often experience vibrations with large amplitudes that may have consequently destructive effects on supported structures. Surface roughness and ice accretion are important issues, as they can considerably alter aerodynamic characteristics of bridge cables. This study describes wind- tunnel experiments on vortex-induced vibration of cylindrical section models with the deliberately adjusted natural frequency f = 5 Hz. The range of reduced velocity was V between 3.90 and 7.77, that corresponds to the resonance band of St between 0.14 and 0.25. Three different cable models were used, i.e., smooth cylinder representing dry cable, helical strand cable and cable with ice-accretion. The isotropic turbulent flow was modelled to represent the low turbulent and moderately turbulent wind conditions.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | bridge cables; ice accretion; atmospheric turbulence; dynamic response; wind-tunnel experiments |
| Subjects: | NATURAL SCIENCES > Physics |
| Divisions: | 1400 Department of fluid mechanics > 1420 Chair of environment and construction aerodynamics |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 25 Aug 2017 08:58 |
| Last Modified: | 15 Mar 2018 08:08 |
| URI: | http://repozitorij.fsb.hr/id/eprint/7874 |
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