Wave Overtopping on Seawalls

Wave Overtopping Rate for Vertical Seawall on Horizontal Floor Under Regular Wave Conditions

“…Ishihara et al 9) investigated wave overtopping of coastal levees and introduced the vertically integrated flow rate for water particles of overtopping waves as a theoretical representation of the wave overtopping rate for a levee. In contrast to the conventional method of using the wave run-up height to calculate the required height of coastal levees, Ishihara et al proposed a method of allowing overtopping to the extent that it does not cause damage and thereby reduced the required height of levees.…”

“…Equations ( 12) -( 17) define the dimensionless overtopping rate using the value per wave, which is also the overtopping rate coefficient when the weir formula is applied to the maximum water level per wave and the wave height. The definition of the overtopping rate coefficient given by Kikkawa et al 10) is given in Equations ( 8) and (9). When Equations (12) and ( 13) are used hereafter, they will be referred to as the overtopping rate coefficients, and when Equations ( 14) -( 17) are used, they will be referred to as the nondimensional overtopping rate as appropriate.…”

Effect of Wave Dissipators on Overtopping Over a Bermed Seawall in Deepwater

“…Wave run-up and overtopping over a maritime structure during the action of a storm is important for assessing the crown elevation, construction cost and safety of the structure, and their impact on the drainage, building and operations in the lee. Conventionally, quantification of the overtopping over a structure with a vertical or inclined seaward face has been studied analytically and experimentally since the 1950s (e.g., Saville 1955, Hunt 1959, Ishihara et al 1960, Iwagaki et al 1965, Shiraishi et al 1968, Shi-igai and Kono 1970, Goda 1975, Owen 1980, Aminti and Franco 1988, Mizuguchi 1993, Franco et al 1994, Allsop et al 1995, van der Meer and Janssen 1995, Besley, 1999, Goda 2000, Bruce et al 2006. Both regular and irregular waves have been used in the laboratory on a model structure with or without armoring units to reduce the incoming wave energy and overtopping.…”