Evolution of Stay Cable Monitoring Using Ambient Vibration
| Author(s): |
Roman Geier
|
|---|---|
| Medium: | conference paper |
| Language(s): | English |
| Conference: | IABSE Symposium: Metropolitan Habitats and Infrastructure, Shanghai, China, 22-24 September 2004 |
| Published in: | IABSE Symposium Shanghai 2004 |
| Page(s): | 468-469 |
| Year: | 2004 |
| DOI: | 10.2749/222137804796302815 |
| Abstract: | Within the scope of design as well as during the subsequent required maintenance of bridge structures engineers are frequently confronted with stay cables. On the one hand because cable-stayed bridges are increasingly designed and built due to their aesthetic appearance and on the other hand because the most-sensitive load carrying elements of such structures - the ropes and cables - are very difficult to check on their condition and on the current cable force. Moreover undesirable vibration excitation by aerodynamic and resonance effects is a decisive criterion to maintain serviceability and ultimate limit state of the structure. For this reason efficient, non-destructive testing and assessment technologies are required without using complicated lift-off tests. The main subject of this paper is to present recent technologies which determine the cable force and the current condition of stay cables, accurately. |
| Keywords: |
stay cable natural frequency cable force wind-induced vibration ambient vibration damping coefficient
|
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