Journal
COASTAL ENGINEERING
Volume 104, Issue -, Pages 26-42Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.coastaleng.2015.06.008
Keywords
Tsunami bore; Bridge piers; Wave-structure interaction; Hydrodynamic force; GPUSPH; Smoothed Particle Hydrodynamics
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Funding
- Office of Naval Research, Littoral Geosciences, and Optics Program
- Pacific Earthquake Engineering Research Center
- Edwards endowment
- National Science Foundation [MRI-0923018]
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The Smoothed Particle Hydrodynamics (SPH) method is applied to investigate the impact of a tsunami bore on simplified bridge piers in this study. This work was motivated by observations of bridge damage during several recent tsunami events, and its aim is to further the understanding of the dynamic interaction between a tsunami bore and a bridge pier. This study is carried out by simulating a well-conducted physical experiment on a tsunami bore impingement on vertical columns with an SPH model, GPUSPH. The influences of bridge pier shape and orientation on free surface evolution and hydrodynamic loading are carefully examined. Furthermore, the unsteady flow field that is around and in the wake of the bridge pier is analyzed. Finally, GPUSPH is applied to explore the hydrodynamic force caused by the bridge pier blockage, the wave impact on structures, and the bed shear stress around a bridge pier due to a strong tsunami bore. (C) 2015 Elsevier B.V. All rights reserved.
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