Hydrodynamic Effects of Solitary Waves Impinging on a Bridge Deck with Air Vents
Publication: Journal of Bridge Engineering
Volume 22, Issue 7
Abstract
Air vents in bridge decks are considered one potential measure for mitigating risk of damage to coastal bridges caused by extreme storm surge because they may reduce hydrodynamic uplift loads significantly. This paper presents a systematic, two-dimensional, numerical study on physical phenomena and hydrodynamic loads involved during the impact of solitary waves on a bridge deck with vents. The effects of the opening size of vents and other prominent factors, including submergence of the deck, wave height, water depth, and number of girders, on hydrodynamic loads were investigated through the numerical study. It was found that, when the deck was submerged initially, the vertical loads on the bridge deck achieved their maximum values at a certain opening size of vents, and their magnitudes could be significantly higher than on a deck without vents. Formulas as functions of these factors were developed based on the computational results to estimate efficiency of air vents to reduce hydrodynamic loads on bridge decks.
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Acknowledgments
This work is sponsored by the National Science Foundation (CMMI-1334551). The authors are grateful to Dr. Xingyue Ren for discussion on this work.
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Published In
Journal of Bridge Engineering
Volume 22 • Issue 7 • July 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Aug 12, 2016
Accepted: Dec 7, 2016
Published online: Apr 13, 2017
Published in print: Jul 1, 2017
Discussion open until: Sep 13, 2017
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