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AEROELASTIC ANALYSIS OF NON-CONVENTIONAL AND SLENDER SUSPENSION BRIDGES / CEDRIC TCHEUTCHOUA SOH, Mike; SONNA DONKO, Maël; Maiorana, Emanuele. - In: DROGI I MOSTY. - ISSN 1643-1618. - 23:(2024), pp. 335-354. [10.7409/rabdim.024.016]

AEROELASTIC ANALYSIS OF NON-CONVENTIONAL AND SLENDER SUSPENSION BRIDGES

EMANUELE MAIORANA
2024-01-01
2024
The aim of this study was to investigate the dynamic effects of wind actions on bridge cross sections, with a goal to propose design charts for non-conventional and slender bridge decks. An eigenvalue analysis was conducted first and the results were validated experimentally. Subsequently, aeroelastic analysis of the bridge deck section was performed. This analysis encompassed the analytical method adhering to the Eurocode and computational fluid dynamics simulations. Both methodologies indicated that the bridge was susceptible to vortex-induced vibrations. To mitigate these vibrations, wind noses provide better stability than the currently used guide vanes. The effect of changing deck width was also studied. Wider and more streamlined sections displayed better aeroelastic performance. The study also revealed that the Eurocode overestimates the derivatives of aerodynamic moment coefficient by 53% to 93%. Consequently, optimized charts are proposed to enhance the accuracy of torsional divergence and flutter speed calculations, facilitating the safe and efficient design of such bridges.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14089/3221
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