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Vulnerability of coastal bridges under extreme hurricane conditions

Vulnerability of coastal bridges under extreme hurricane conditions  Accurate methodologies to quantify the vulnerability and resiliency of coastal infrastructure to wave-induced forces are crucial to sound risk management in coastal regions where hurricane hazard is high. This paper describes a high-resolution coupled Eulerian-Lagrangian (CEL) finite element model to evaluate the vulnerability of coastal bridges to wave-induced forces during large storms. The modeling technique was calibrated and shown to be in good agreement with experimental results from a reduced-scale bridge structure tested at the O.H. Hinsdale Wave Research Laboratory at Oregon State University. The high-resolution bridge model was used to simulate the response of common types of bridge structures to hydrodynamic loads under hurricane conditions (i.e. surge height, wave height, and frequency) expected in the Texas-Louisiana coast. Results show that superstructure-substructure connection demands for bridges under wave impact loading are sensitive to the flexibility of the substructure, which has historically been modeled as rigid in flume experiments and computer simulations used to develop current design provisions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Vulnerability of coastal bridges under extreme hurricane conditions

Nasouri, R.; Matamoros, A.; Montoya, A.; Testik, F.Y.
Bridge Structures , Volume 15 (3): 13 – Jan 1, 2019
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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-190158
Publisher site
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Abstract

 Accurate methodologies to quantify the vulnerability and resiliency of coastal infrastructure to wave-induced forces are crucial to sound risk management in coastal regions where hurricane hazard is high. This paper describes a high-resolution coupled Eulerian-Lagrangian (CEL) finite element model to evaluate the vulnerability of coastal bridges to wave-induced forces during large storms. The modeling technique was calibrated and shown to be in good agreement with experimental results from a reduced-scale bridge structure tested at the O.H. Hinsdale Wave Research Laboratory at Oregon State University. The high-resolution bridge model was used to simulate the response of common types of bridge structures to hydrodynamic loads under hurricane conditions (i.e. surge height, wave height, and frequency) expected in the Texas-Louisiana coast. Results show that superstructure-substructure connection demands for bridges under wave impact loading are sensitive to the flexibility of the substructure, which has historically been modeled as rigid in flume experiments and computer simulations used to develop current design provisions.

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2019

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