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- Title
Performance and Repair Design of Stay Cables with Rain/Wind-Induced Vibrations.
- Authors
Witthoft, Scott; Kesner, Keith; Poston, Randall W.
- Abstract
The results of a multifaceted investigation into large-amplitude vibrations of bridge stay cables are presented. The vibration of the stay cables occurred under light rain and wind conditions, and resulted in low-frequency, large-amplitude oscillations having recorded displacements of over 24 in.(0.6 m). Due to concerns about the implications of the vibrations on the integrity and durability of the stay cables and observed damage to stay-cable anchorage components, an investigation and repair program was developed. The final repair program arose from an investigation that combined the talents of practicing engineers, the Texas Department of Transportation, and representatives from four universities. Ultimately, a combination of supplemental hydraulic dampers and cable restrainers were used to mitigate the vibrations. This paper describes the results of the investigation and presents the practice-based methodology used to develop the implemented repair program.
- Subjects
TEXAS; BRIDGE vibration; SERVICE life; DAMPING (Mechanics); FRACTURE mechanics; CABLE-stayed bridges; BRIDGE maintenance &; repair; TEXAS. Dept. of Transportation
- Publication
Journal of Performance of Constructed Facilities, 2008, Vol 22, Issue 6, p364
- ISSN
0887-3828
- Publication type
Article
- DOI
10.1061/(ASCE)0887-3828(2008)22:6(364)