The design of marine outfall pipelines must take into account four structural factors: (1) installation stress, (2) stress induced by anchoring if applicable, (3) collapse/buckling analysis, and (4) unsupported pipe spans. Installation stress can be analyzed by calculating the estimated magnitude of forces acting on the pipeline induced by the selection construction method and equipment. For instance, if the pipeline is to be pulled into place, the maximum pulling force can be divided by the pipe wall thickness area to determine stress. Operational stresses are due to environmental factors such as slumping of deltaic soils, scouring of supporting sediments by wave or current action, or even flotation due to removal of overburden, all of which create supported lengths.
KeywordsReynolds Number Strouhal Number Submarine Pipeline Flexible Cylinder Offshore Pipeline
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