This work aims to infer some general considerations on flutter stability of long-span suspen-sion bridges, considering both the completed configuration and the erection phase. A main span length that is expected to become soon not so exceptional (about 1600 m) and a common closed-box deck cross section have been taken into account in the analysis. The bridge planned for the crossing of the Julsundet Fjord in Norway has been assumed as a case study. The inves-tigation revealed that stability against flutter is warranted without the need of particular opti-mizations except for the first phase of deck erection when this is started from the centre. In ad-dition, the flutter calculations emphasize the key role of mode coupling coefficients both in service and during the construction stages.
Flutter stability of a suspension bridge during construction / Niccolò Barni, Salvatore Giacomo Morano, Claudio Mannini. - STAMPA. - (2019), pp. 1-4. (Intervento presentato al convegno 15th International Conference on Wind Engineering (ICWE 2019) tenutosi a Beijing, China nel 1- 6 September 2019).
Flutter stability of a suspension bridge during construction
BARNI, NICCOLO';Salvatore Giacomo Morano;Claudio Mannini
2019
Abstract
This work aims to infer some general considerations on flutter stability of long-span suspen-sion bridges, considering both the completed configuration and the erection phase. A main span length that is expected to become soon not so exceptional (about 1600 m) and a common closed-box deck cross section have been taken into account in the analysis. The bridge planned for the crossing of the Julsundet Fjord in Norway has been assumed as a case study. The inves-tigation revealed that stability against flutter is warranted without the need of particular opti-mizations except for the first phase of deck erection when this is started from the centre. In ad-dition, the flutter calculations emphasize the key role of mode coupling coefficients both in service and during the construction stages.File | Dimensione | Formato | |
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