Study of Pipeline Penetration Based on CEL in Clay

Abstract

In deep water, pipelines are usually laid directly on the seabed. During the laying process, the pipe typically penetrates into the seabed by a fraction of a diameter. The vertical embedment of pipeline and formation of berm during penetration have a significant effect on the pipeline stability. This study aims to investigate the vertical pipeline penetration at uniform and normal consolidated clay, by carrying out a series of numerical analyses, in which the coupled Eulerian-Lagrangian method (CEL) is incorporated to enable large deformation simulation. These analyses have been compared with collapse loads calculated using the theory solution. The results show that the CEL method is very suitable for simulating large-deformation pipesoil interaction.

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

• https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/25/e3sconf_caes2020_03027.pdf under the license https://creativecommons.org/licenses/by

• https://www.e3s-conferences.org/10.1051/e3sconf/202016503027/pdf,

http://dx.doi.org/10.1051/e3sconf/202016503027 under the license cc-by

• https://www.e3s-conferences.org/articles/e3sconf/abs/2020/25/e3sconf_caes2020_03027/e3sconf_caes2020_03027.html,

https://academic.microsoft.com/#/detail/3021389369 under the license https://creativecommons.org/licenses/by/4.0/

• https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/25/e3sconf_caes2020_03027.pdf,

https://doaj.org/toc/2267-1242