Model Summary |
 
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Model Summary |
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This example considers the analysis of 1000m of pipeline lying on an arbitrary rigid seabed in a water depth of 100m. The analysis is conducted in a number of stages, as follows. An initial static analysis is first performed where the pipeline is located and restrained horizontally just above the arbitrary seabed profile. The vertical constraints on the pipeline are then removed in a subsequent quasi-static analysis, and the pipe is allowed to descend to the seabed under the influence of gravity and buoyancy. A further static analysis is then performed in which current loading is introduced, and the static equilibrium position of the pipeline on the seabed is obtained. Finally, a dynamic regular wave analysis is performed to investigate influence of wave loading on the pipeline. The effects of temperature loading and Poisson’s ratio are included from the initial static stage.
The seabed profile is plotted in the figure below. Obviously the horizontal and vertical scales are very different, in order to render the bathymetry detail visible.
Arbitrary Seabed Profile