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Lateral Restraining Stiffness Effects on the Bridge Deck-Wave Interaction under Hurricane Waves
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.
Lateral Restraining Stiffness Effects on the Bridge Deck-Wave Interaction under Hurricane Waves
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.
Lateral Restraining Stiffness Effects on the Bridge Deck-Wave Interaction under Hurricane Waves
Xu, Guoji (author) / Cai, C. S. (author)
Coastal Structures and Solutions to Coastal Disasters Joint Conference 2015 ; 2015 ; Boston, Massachusetts
2017-07-11
Conference paper
Electronic Resource
English
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