Wave-induced seabed response around a pipe laid on a poro-elastic seabed

The stability of a pipeline has been extensively studied by coastal and mar ine geotechnical engineers in recent years. However, most previous investig ations have been only concerned with the fluid field around the pipelines, not the wave-induced soil response below the pipelines. In this paper, a tw o-dimensional finite-element model is employed to investigate the wave-indu ced seabed response around a pipe laid on a poro-elastic seabed. Unlike con ventional investigations, both soil permeability and Young's modulus are co nsidered to vary with soil depth in the present model. Based on the propose d model, the mechanism of the wave-induced pore pressure and effective stre sses are explored.