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Numerical modelling of wave-induced pore pressure around a buried pipeline

Numerical modelling of wave-induced pore pressure around a buried pipeline : WSPI-3D model

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Authors

  • Behnam Shabani
  • Dong-Sheng Jeng
  • Jianhong Ye
  • Yakun Guo

Research units

Info

Original languageEnglish
TitleProceedings of the Asme 29th International Conference On Ocean, Offshore And Arctic Engineering, 2010
SubtitleOMAE2010 Volume 1
Place of publicationNEW YORK
PublisherAmerican Society of Mechanical Engineers
Publication date2010
Pages747-755
Number of pages9
ISBN (Print)978-0-7918-4909-5
StatePublished

Conference

Conference29th ASME International Conference on Ocean, Offshore and Arctic Engineering
CountryChina
CityShanghai
Period6/06/1011/06/10
Internet addresshttp://www.asmeconferences.org/omae2010/

Abstract

In this paper a three-dimensional numerical model is developed to analyze the ocean wave-induced seabed response. The pipeline is assumed to be rigid and anchored within a trench. Quasi-static soil consolidation equations are solved with the aid of the proposed Finite Element (FE) model within COMSOL Multiphysics. The influence of wave obliquity on seabed responses, the pore pressure and soil stresses, are studied. A comprehensive tests of FE meshes is performed to determine appropriate meshes for numerical calculations. The present model is verified with the previous analytical solutions without a pipeline and two-dimensional experimental data with a pipeline. Numerical results suggest that the effect of wave obliquity on soil responses can be explained through the following two mechanisms: (i) geometry-based three-dimensional influences, and (ii) the formation of inversion nodes. However the influences of wave obliquity on the wave-induced pore pressure are insignificant.

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