CONFINED-CREST IMPACT: THE INFLUENCE OF THE TOE BERM ON THE IMPULSIVE LOAD CONDITIONS

Composite vertical breakwaters are coastal structures used to defend port basins from waves in intermediate and deep water conditions. In order safely use the inner side of harbors, it is important limit wave overtopping. Parapet walls for this purpose. To improve hydraulic efficiency parapet wall with a fixed crown height, can be shaped giving rise recurved overhand toward sea. Its function deflect back incident waves. Recently, has been shown that interaction between non-breaking induce impulsive pressures due confinement crest deflected seaward by overhanging structure. The new physical phenomenon called “Confined-Crest Impact (C-CI)” as Castellino et al. 2018. This “unexpected” structural failure (Dermentzoglou al., 2020). More recently, (2021) extended Goda’s formulae, which define maximum along breakwater, considering “C-CI” induced presence parapet. conducted studies have concerned breakwater without any berm at toe caisson. purpose research extend last work composite based on foundation berm.