The assumption of parabola wave run-up wedge is used to replace the linear wave run-up wedge''s hypothesis. Use this new assumption to substitute into the wave momentum flux model that proposed by Hughes (2004) to predict the wave run-up height on step dike was completed in this study. Analysis result shows the predicted wave runup height of the parabola wave run-up wedge model can obtained a little bit accurate than the original linear wave run-up wedge model.
A large amount of laboratory wave run-up data that obtained from experiment study and basic study on plane and rubble mound sloped dike is available at the past time. However, the wave run-up prediction model in step dike surface is still scarce. In year of 2004, Hughes ever proposed a linear wave run-up wedge assumption model to estimate the maximum depth-integrated wave momentum flux over a wave length for characterizing the wave contribution at coastal structures. In this study, a new parabola wave run-up wedge hypothesis to replace the linear wave run-up wedge assumption is presented.
Hughes (2003b) recommended the following equations for predict the irregular wave run up on smooth, impermeable slope for non-breaking (surging/collapsing) waves and breaking (plunging/spilling) waves as delineated by value of Hmo/Lp.
