Results of an experimental campaign that focuses on the determination of the mean aerodynamic force coefficients on yawed and inclined stay cable commonly used on long-span cable-stayed bridges are presented in this paper. The tests were carried out on a long sectional model of a cable in the large boundary layer wind tunnel of Politecnico di Milano in smooth and turbulent flow. The experiments revealed that for wind speeds and turbulence level that can occur regularly on bridge sites, across-wind forces that can rapidly changes with wind speed and wind direction are present. The forces are associated with a particular aerodynamic phenomenon that occurs in the critical Reynolds number range for smooth circular cylinders and that can lead to wind-induced vibrations and cable galloping.

Experiments on a yaw stay cable in turbulent flow in the critical Reynolds number

ZASSO, ALBERTO;GIAPPINO, STEFANO GIUSEPPE
2011

Abstract

Results of an experimental campaign that focuses on the determination of the mean aerodynamic force coefficients on yawed and inclined stay cable commonly used on long-span cable-stayed bridges are presented in this paper. The tests were carried out on a long sectional model of a cable in the large boundary layer wind tunnel of Politecnico di Milano in smooth and turbulent flow. The experiments revealed that for wind speeds and turbulence level that can occur regularly on bridge sites, across-wind forces that can rapidly changes with wind speed and wind direction are present. The forces are associated with a particular aerodynamic phenomenon that occurs in the critical Reynolds number range for smooth circular cylinders and that can lead to wind-induced vibrations and cable galloping.
Annual Conference of the Canadian Society for Civil Engineering 2011, CSCE 2011
9781618392183
Aerodynamic phenomena; Boundary layer wind tunnel; Bridge sites; Critical Reynolds number; Experimental campaign; Inclined stay cables; Long span cable stayed bridges; Mean aerodynamic force coefficient; Sectional model; Stay cable; Turbulence level; Wind directions; Wind induced vibrations; Wind speed; Aerodynamics; Cable stayed bridges; Cables; Circular cylinders; Civil engineering; Experiments; Reynolds number; Turbulent flow; Bridges
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/637316
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