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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v29.i3-4.140
10 pages

Aerodynamic Study of Two Cable Stayed Bridges in Poland

O. Flamand
Centre Scientifique et Technique du Batiment (CSTB), Nantes, France
J. A. Zuranski
Instytut Techniki Budowlanej - Building Research Institute (ITB) ul. Filtrowa 1, 00-611, Warsaw, Poland
Andrzej Flaga
Institute of Structural Mechanics, Faculty of Civil Engineering, Krakow University of Technology, 24 Warszawska Av., 31-155 Krakow; and Department of Structural Mechanics, Lublin Technical University, ul. Nadbystrzycka 40, 20-618 Lublin, Poland

要約

The aerodynamic stability of a tender bridge is commonly studied when the wind conditions are known to be severe. In Poland strong winds are quite rare, but the experimental wind tunnel study of two recently built cable stayed bridges proved to be useful. If no catastrophic oscillation was to be expected, the deck's oscillation under moderate speed wind, due to vortex shedding, should have created some disturbance. This excitation was enhanced by the unusually small distance between the bridge's deck and the river surface, that created an interaction process. The deck's shape was modified by cornices and baffles and was stabilized. The physical modeling of the bridge subject to wind turbulence was also confirmed by a series of calculations.