An Analytical Solution of Dynamic Responses for Seabed under Flow and Standing Wave Coexisting Fields

摘要

An analytical solution of dynamic responses for seabed in shallow,finite and infinite thicknesses has been developed under flow and standing wave coexisting field at a constant water depth condition.To do this,based on the Biot's consolidation theory,the seabed is assumed as a porous elastic media with the assumptions that pore fluid is compressible and Darcy law governs the flow.The developed analytical solution is compared with the previous results and is verified.Using the analytical solution the deformation,pore pressure,effective and shear stresses of seabed are examined under various given values of flow velocity,incident wave period and seabed thickness.From this study,it is confirmed that the seabed response is quite different depending on consideration of flow,which causes changing period and length of incident and reflection waves.