Study assesses thermomechanical buckling in shore-approach pipelines

Shallow and insufficient soil support may lead to upheaval buckling of heated pipelines in shore approach areas.This article presents a numerical model to simulate the thermomechanical buckling of buried heated pipelines in shore approach areas. An analysis adopting geometrical, physical, and operational data is also carried out for a particular Petrobras project, taking in situ geophysical survey, geotechnical, and oceanographic information into account. The discussion also addresses the influence of the sediment transport after the opening of the trench and required backfilling with a heavier soil.Progress in modelingAnalytical and numerical modeling of the upheaval buckling response of...

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