Study of Integrity and Interaction of a Non-Buried Marine Subsea Pipeline with Soil

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To study the seismic resistance of subsea pipelines, the following item-wise calculations are made for the following exposures:- determining the seismic hazard of the area;- analysis of pipeline integrity and pipeline-soil interaction;- analysis of soil stability along the pipeline route.Assessment of the stressed state of a vibrating subsea pipeline is related to the need to determine the values and basic dependencies of resistance forces (damping, energy dissipation) when exposed to vibrations. Energy dissipation taking place in case of subsea pipeline vibrations is composed of hydrodynamic resistance losses, losses due to resistance in the structural material of a pipeline (insulation coating, lining, concrete coating, ballast) and losses to the soil through supports.

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1042-1046

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September 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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