Wave-induced pressures in porous bonded revetments. Part II: Pore pressure just beneath the revetment and in the embankment subsoil

Tensile Bending Stresses in Mortar-Grouted Riprap Revetments Due to Wave Loading

“…Furthermore, MGRRs have a wide range of possible permeabilities and porosities due to different amounts of mortar used for grouting. These parameters are of paramount importance for the wave-structure interaction [11][12][13]22]. Therefore, it is not possible to determine beforehand which external loading is decisive for the formation of cracks in MGRRs.…”

“…The pressures on and beneath the revetment top layer represent the external load acting on the top layer of a cohesive revetment. The pressure beneath the top layer as a function of the pressure on the top layer is significantly influenced by the permeability of the top layer [11][12][13]. With regard to possible wave loading conditions, Schiereck [14] therefore distinguishes three different types of revetments:…”

Wave-induced seabed residual response and liquefaction around a mono-pile foundation with various embedded depth

“…It should be noted that the tensile stress may occur in the simulation as there is no "yield" criteria in the elastic model. However, the elastic model is popularly used due to its simplicity and numerous successful validation cases in engineering practice (Alcérreca-Huerta and Oumeraci, 2016;Jeng et al, 2013;Meijers and Luger, 2012). The governing equations in FD approximations can be written as follows (Zienkiewicz et al, 1980):…”

“…Based on the experiments and field observations (Zen and Yamazaki, 1990), two mechanisms for the wave-induced pore pressure variation can be identified, namely, an oscillatory mechanism and a residual mechanism. An oscillatory mechanism is usually found in the unsaturated sandy seabed with good drainage conditions, where a sharp upwardly directed pressure gradient may lead to the momentary seabed liquefaction (Madsen, 1978;Alcérreca-Huerta and Oumeraci, 2016;Zhou et al, 2017).…”