Investigation of Strouhal number of iced cable model of cable-supported bridges with respect to angle of wind attack

0435633 - ÚTAM 2015 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Górski, P. - Pospíšil, Stanislav - Kuznetsov, Sergeii - Tatara, M. - Marušić, Ante
Investigation of Strouhal number of iced cable model of cable-supported bridges with respect to angle of wind attack.
7th International symposium on environmental effects on building and people. Actions, influences, interactions, discomfort. EEBP7. Lublin: Polish Association for Wind Engineering, 2014 - (Lipecki, T.; Flaga, A.), s. 103-104. ISBN 978-83-932544-9-1.
[International Symposium on Environmental Effects on Buildings and People /7./. Lublin - Krakow (PL), 20.10.2014-22.10.2014]
Grant CEP: GA MŠMT(CZ) LO1219; GA MPO(CZ) FR-TI3/654
Klíčová slova: bridge cable * ice accretion * Strouhal number * angle of attack * vortex shedding frequency
Kód oboru RIV: JN - Stavebnictví

The Strouhal number is one of the most important parameter which is necessary for an analysis of the vortex excitation response of slender structures. the paper presents the method and results of wind tunnel inverstigation of Strouhal number of iced cable model of cable-supported bridges. The investigation were conducted in the Climatic Wind Tunnel Laboratory of the Czech Academy of Sciences in Telč. The methodology leading to the experimental icing of the inclined cable model in the climatic section of the laboratory was prepared. The shape of the ice on the cable was registred by photogrammetry and a numerical evaluation. For the aerodymanic investigations the iced cable model on smaller scale was reproduced with 3D printing procedure. The Strouhal number was determined within the range of the Reynolds number between 28·10³ and 122·10³, based on the dominant vortex shedding frequency measured in the flow behind the model. The model was orientated at three principal angles of wind attack for each of the Reynolds number values.
Trvalý link: http://hdl.handle.net/11104/0239431