Some results of a study on an innovative design approach for long-span suspension bridges are reported. The deck configurations are characterized by frequency ratios of the first torsional to vertical bending modes susceptible to couple with values lower than unity. The aim of the study is to investigate both on the possibility to obtain a total inhibition of the classical flutter instability mechanism in the range of wind speed of practical interest and on the potentiality of such a design approach in achieving significant cost savings due to the simpler deck construction allowed.
Configurazioni innovative di impalcato in acciaio a cassone multiplo per ponti sospesi di grandissima luce / Piero D’Asdia; Sofia Febo; Gianni Bartoli; Claudio Mannini; Lorenzo Procino; Salvatore Noè. - STAMPA. - (2009), pp. 1-10. (Intervento presentato al convegno XXII Congresso CTA tenutosi a Padova nel 28-30 settembre 2009).
Configurazioni innovative di impalcato in acciaio a cassone multiplo per ponti sospesi di grandissima luce
BARTOLI, GIANNI;MANNINI, CLAUDIO;
2009
Abstract
Some results of a study on an innovative design approach for long-span suspension bridges are reported. The deck configurations are characterized by frequency ratios of the first torsional to vertical bending modes susceptible to couple with values lower than unity. The aim of the study is to investigate both on the possibility to obtain a total inhibition of the classical flutter instability mechanism in the range of wind speed of practical interest and on the potentiality of such a design approach in achieving significant cost savings due to the simpler deck construction allowed.
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