In this paper, a 2D numerical model for wave-girder interaction was proposed to estimate\nthe maximum wave forces on the box girder of a coastal bridge under extreme wave conditions.\nThe Reynolds Averaged Navier-Stokes (RANS) equations were applied to simulate water wave\nmotion and the Volume of Fluid (VOF) method was used to track the free surface. In this study, the\ndeveloped 2D numerical model was validated by first comparing with experimental data. Then, a\nset of parametric studies was conducted to examine the effects of the wave heights, wave periods,\nwater depths and submerged coefficients on the wave force on the box girder under extreme wave\nconditions. Finally, a function to predict the extreme wave-induced forces on the box girder under\nvarious wave conditions was proposed for engineering practice
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