Abstract
Stay cables are the most flexible elements of cable-stayed bridges. When exposed to wind
loading, they often undergo large amplitude vibrations, thus motivating serious design
concerns. In most cases, vibrations are observed in the presence of water rivulets or ice
accretions, which lead to an effective change in the cable cross section, and its aerodynamic
properties. On the other hand, divergent, self-excited vibrations have been observed in the
field also for dry, inclined stay cables, in warm temperatures. The need for reliable design
guidelines for inclined stay cables has motivated experimental and theoretical research in the
last two decades, even though a definitive understanding of the flow around inclined cables
under various surface conditions has not been achieved. A comparative study on the
aerodynamic coefficients of stationary inclined stay cables, under various surface conditions,
i.e. dry, wet and icy, in laminar and turbulent flow, has been initiated at the new DTU/Force
Climatic Wind Tunnel facility in Denmark. This paper covers selected results of the
comparative study, i.e. aerodynamic coefficients of dry inclined cables in laminar flow
conditions.
Original language | English |
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Title of host publication | Proceedings of the XIII Italian Steel Conference |
Publication date | 2011 |
Publication status | Published - 2011 |
Event | XXIII Giornate Italiane della Costruzione in Acciaio - Lacco Ameno, Ischia, Italy Duration: 9 Oct 2011 → 12 Oct 2011 Conference number: 23 |
Conference
Conference | XXIII Giornate Italiane della Costruzione in Acciaio |
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Number | 23 |
Country | Italy |
City | Lacco Ameno, Ischia |
Period | 09/10/2011 → 12/10/2011 |
Other | XXIII Italian Steel Conference |
Keywords
- Wind-induced vibration
- Cable-wind angle
- Cable-stayed bridge
- angle-of-attack
- Lift coefficients
- Stay-cables
- Dry-inclined galloping
- Drag coefficient