Impact d'un écoulement cyclique sur un ouvrage semi-émergé

The cyc/ical pressure variations and infernal fJows induced by tide are otten the major cause of generol instability of the harbour buildings.We proposed a model wh/ch tries ta est/mate the impact of cyclical hydraulic actions on bank behav/our.The present paper discusses mathematical linearisation procedures for the nonlinear equation of the free surface /n unconfined homogeneous aquifers.We study in this case the governing movement equation of tidal cyclic oscillation transmitted through the porous media of the vertical bonk.A new linear torm is admitted and justitied, and the analytical solution is developed.f<esuftsore shawn with a graph of groundwafer table fluctuation in the bonk which is due ta the osciflations of the woter level of ocean-tide effects in coastal aquifer.The linear form involves a water table raising level in the bank, this leve! is greater thon the average seo level.The envelope curves can define the "beoten" zone in soil generated by tide This onolysis shows that some Interessant points could be used in horbour building conception and safety sfudy.