Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline

WSPI–3D Model

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
Original languageEnglish
Title of host publication29th International Conference on Ocean, Offshore and Arctic Engineering
Subtitle of host publicationVolume 1
PublisherASME
Pages747-755
Number of pages9
Volume1
ISBN (Print)9780791849095
DOIs
Publication statusPublished - 2010
Event29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2010) - Shanghai, China
Duration: 6 Jun 201011 Jun 2010

Conference

Conference29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2010)
CountryChina
CityShanghai
Period6/06/1011/06/10

Fingerprint

pore pressure
obliquity
modeling
induced response
soil
ocean wave
trench
consolidation
geometry

Cite this

Shabani, B., Jeng, D-S., Ye, J., & Guo, Y. (2010). Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline: WSPI–3D Model. In 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1 (Vol. 1, pp. 747-755). ASME. https://doi.org/10.1115/OMAE2010-20528

Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline : WSPI–3D Model. / Shabani, Behnam; Jeng, Dong-Sheng; Ye, Jianhong; Guo, Yakun.

29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1. Vol. 1 ASME, 2010. p. 747-755.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shabani, B, Jeng, D-S, Ye, J & Guo, Y 2010, Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline: WSPI–3D Model. in 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1. vol. 1, ASME, pp. 747-755, 29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2010), Shanghai, China, 6/06/10. https://doi.org/10.1115/OMAE2010-20528
Shabani B, Jeng D-S, Ye J, Guo Y. Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline: WSPI–3D Model. In 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1. Vol. 1. ASME. 2010. p. 747-755 https://doi.org/10.1115/OMAE2010-20528
Shabani, Behnam ; Jeng, Dong-Sheng ; Ye, Jianhong ; Guo, Yakun. / Numerical Modelling of Wave-Induced Pore Pressure Around a Buried Pipeline : WSPI–3D Model. 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1. Vol. 1 ASME, 2010. pp. 747-755
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AB - 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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