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Wind and Structures Volume 3, Number 1, March 2000 , pages 41-58 DOI: https://doi.org/10.12989/was.2000.3.1.041 |
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Aeroelastic instability of long-span bridges: contributions to the analysis in frequency and time domains |
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Vincenzo Sepe, Luca Caracoglia and Piero D\'Asdia(Italy)
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| Abstract | ||
| According to research currently developed by several authors (including the present ones) arnmultimode approach to the aeroelastic instability can be appropriate for suspension bridges with very longrnspan and so with close natural frequencies. Extending that research, this paper deals in particular with: i)rnthe role of along-wind modes, underlined also by means of the flutter mode representation; ii) the effectsrnof a variation of the mean wind speed along the span. A characterisation of the response in the timerndomain by means of an energetic approach is also discussed. | ||
| Key Words | ||
| aeroelastic instability; long-span suspension bridges; frequency-domain multimode analysis; time-domain energetic approach. | ||
| Address | ||
| Vincenzo Sepe, Dipartimento di Ingegneria Strutturale e Geotecnica - Universita di Roma \"La Sapienza\" -via Eudossiana 18 - 00184 Roma, ItalyrnLuca Caracoglia, Dipartimento di Ingegneria Civile - Universita di Trieste - p.le Europa 1 - 34127 Trieste, ItalyrnPiero D\'Asdia , Dipartimento di Scienze, Storia dell | ||