WAVE FLUME EXPERIMENT ON WAVE RESPONSE FOR SANDY SEABED WITH CRUSHED STONE REPLACEMENT OF SEABED SURFACE

Abstract

 This study uses a wave flume experiment to investigate pore water pressure response to wave action on a sandy seabed. Crushed stone replacement of sandy seabed is done as a countermeasure to sea wave induced liquefaction, but this countermeasure does not suppress wave induced excess pore water pressure generated in the sandy seabed. It is suggested, therefore, that there is risk of liquefaction in sandy seabed due to action of excessive external wave forces. It has suggested the effect of countermeasure that liquefaction resistance increases because initial effective stress in sandy soil increases with crushed stone replacement.