Study of Lateral Buckling of Submarine Pipeline

Abstract

The upheaval buckling of marine pipelines caused by the temperature stress is one of the main failure modes of pipelines. When a pipeline is operated at high internal pressure and temperature, it will attempt to expand and contract for differential temperature changes. Normally the line is not free to move because of the plane strain constraints in the longitudinal direction and soil friction effects. For positive differential temperature it will be subjected to an axial compressive load and when this load reaches some critical value, the pipe may experience vertical (upheaval buckling) or lateral (snaking buckling) movements that can jeopardize the structural integrity of the pipeline. In these circumstances, an evaluation of the pipeline behavior should be performed in order to ensure the pipeline structural integrity during operation in such demanding loading conditions. Performing such analysis, the correct mitigation measures for thermal buckling can be taken into account either by acceptance of bar buckling but preventing the development of excessive bending moment, or by preventing any occurrence of bending.

Original document

The different versions of the original document can be found in:

• http://dx.doi.org/10.2991/emeit.2012.117 under the license https://creativecommons.org/licenses/by

• https://download.atlantis-press.com/article/3335.pdf

• https://www.atlantis-press.com/proceedings/emeit-12/3335,

https://academic.microsoft.com/#/detail/2088810127 under the license cc-by