Journal
COASTAL ENGINEERING
Volume 39, Issue 2-4, Pages 243-272Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-3839(99)00063-0
Keywords
submarine pipelines; progressive waves; pore pressure; uplift force; soil saturation
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Among all environmental loads usually considered in the design procedure, the most critical problem in determining a vertical stability of a submarine pipeline buried in permeable soils under progressive surface-water wave loading is the prediction of the wave-induced cyclic pore-pressure response of a seabed in the vicinity of a submarine pipeline. A study of the hydrodynamic (i.e., wave-induced) uplift force acting on a submarine pipeline buried in sandy seabed sediments is presented, under the assumption of different compressibility models of the two-phase seabed/pore-fluid medium. Introducing an uplift-force perturbation ratio, the question of perturbation effects affecting the wave-induced pore-pressure field by the presence of a stiff and impermeable body of the submarine pipeline is analysed thoroughly. (C) 2000 Elsevier Science B.V. All rights reserved.
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