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The Influence of Turbulence and Deck Section Geometry on the Aeroelastic Behaviour of a Cable-Stayed Bridge Model (Les Effects de la Geometrie de Sections de Tablier sur le Comportement Aerolastique d'une Maquette de Pont a Haubans).
NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)
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Research on bridge aerodynamics has made substantial progress behaviour based on various scale model tests performed in wind tunnels. In spite of these efforts, there still remain important effects that are not completely understood one of which is the effect of atmospheric turbulence on the wind-induced behaviour of the bridge. A recent consideration for bridge aerodynamics research is the trend in North America and Japan to erect cable stayed crossings. These lead to difficulties in determining the responses to aerodynamic loading. What is contained in this report are the results of a full aeroelastic model test of a cable stayed bridge at a geometric scale of 175. Nine deck section configurations were tested in three different flows two of which were properly scaled atmospheric turbulence, and the third being smooth flow. The experiments were performed in 9 m X 9 m wind tunnel. Author
APPROVED FOR PUBLIC RELEASE