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Peculiar aerodynamic advantages and problems of twin-box girder decks for long span crossings

Peculiar aerodynamic advantages and problems of twin-box girder decks for long span crossings  Multi-box girder deck section (typically a twin-box) is considered an effective solution to increase the aeroelastic stability threshold. However, besides this positive feature, twin-box sections may have some aerodynamic problems that should be accurately addressed during the tailoring of the section: dependence of unsteady force coefficients of the mean angle of attack, amplitude of motion, Reynolds number; complex vortex shedding phenomenon and related vortex-induced vibrations. It is shown that small geometrical details can influence significantly the overall performance of the twin-box section, calling for further research studies on this topic. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Peculiar aerodynamic advantages and problems of twin-box girder decks for long span crossings

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Publisher
IOS Press
Copyright
Copyright © 2019 © 2019 – IOS Press and the authors. All rights reserved
ISSN
1573-2487
eISSN
1744-8999
DOI
10.3233/BRS-190162
Publisher site
See Article on Publisher Site

Abstract

 Multi-box girder deck section (typically a twin-box) is considered an effective solution to increase the aeroelastic stability threshold. However, besides this positive feature, twin-box sections may have some aerodynamic problems that should be accurately addressed during the tailoring of the section: dependence of unsteady force coefficients of the mean angle of attack, amplitude of motion, Reynolds number; complex vortex shedding phenomenon and related vortex-induced vibrations. It is shown that small geometrical details can influence significantly the overall performance of the twin-box section, calling for further research studies on this topic.

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2019

References

  • Vortex induced vibrations of a bridge deck: Dynamic response and surface pressure distribution
    Belloli