Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015
Lateral Restraining Stiffness Effects on the Bridge Deck-Wave Interaction under Hurricane Waves
Publication: Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
ABSTRACT
An investigation of the lateral restraining stiffness effect on the bridge deck-wave interaction under hurricane waves is conducted numerically using a dynamic mesh updating technique. At first, a mass-spring-damper system is implemented in a commercial CFD program in order to realize that the bridge superstructure can vibrate laterally under the wave actions. Then, a wave model based on the Stokes 2nd order wave theory is developed and verified with analytical solutions. The shear stress transport (SST) k-ω model is used as the turbulence closure for the RANS equations. This developed methodology is further verified with experimental measurements in the literature which assures its valid applications in the following parametric study. Finally, general characteristics of the structural vibration and the wave forces are observed and discussed through a parametric study. The obtained results show that increasing the structural flexibilities in the lateral/transverse direction does not necessarily benefit the bridge structure with an obvious force reduction for both the horizontal and vertical forces on the bridge superstructure.
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ACKNOWLEDGEMENT
This work is supported by the Louisiana State University, under the Economic Development Assistantship for the first author and the NSF Grant CMMI-0927824. The work is also supported by HPC@LSU high performance computing resources. All the opinions presented here are those of the writers, not necessarily representing those of the sponsors.
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Published In
Coastal Structures and Solutions to Coastal Disasters 2015: Resilient Coastal Communities
Pages: 619 - 629
Editors: Louise Wallendorf, U.S. Naval Academy and Daniel T. Cox, Ph.D., Oregon State University
ISBN (Online): 978-0-7844-8030-4
Copyright
© 2017 American Society of Civil Engineers.
History
Published online: Jul 11, 2017
Published in print: Jul 11, 2017
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