Inundation effect of wave forces on jack-up platforms

This paper aims to study the importance of the wave inundation effect. A co ncentrated force acting at the mean water level of the platform leg is used to represent the inundation effect due to variable wave surface. Its effec ts on the total and maximum wave forces are investigated based on structura l modal analysis and linear wave assumptions. liner the inundation drag for ce is approximated as an asymmetric second-order term, the corresponding fr equency-domain transfer functions of Volterra/Wiener representation are der ived, The auto-spectra of the deck displacement of 2 typical jack-up platfo rms are numerically evaluated to show the significant contribution of the i nundation effect to the structural dynamic responses.