Abstract
An analytical study of subsurface transportation of long marine pipelines has been performed. Systematic models and numerical algorithms are developed to predict the static configuration and stress distributions along the pipeline during transportation phase. A successive linearization technique and the state variable transfer matrix method are utilized to obtain solutions to the nonlinear two-point boundary value system of equations. Discrete buoyancy forces are also included to reduce barge thrust requirement while maintaining safe stress levels along the pipeline.
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