3D Modeling of Wave-Seabed-Pipeline in Marine Environments
Behnam Shabani 1, Dong-Sheng Jeng *, 2
Identifiers and Pagination:Year: 2008
First Page: 121
Last Page: 142
Publisher Id: TOCIEJ-2-121
Article History:Received Date: 11/4/2008
Revision Received Date: 1/7/2008
Acceptance Date: 3/7/2008
Electronic publication date: 6/11/2008
Collection year: 2008
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this study, a three-dimensional numerical model is developed, based on the Finite Element Method, to analyse the behaviour of soil under the wave loading. The pipeline is assumed to be rigid and anchored within a trench. The influence of wave obliquity on seabed responses, the pore pressure and soil stresses, are studied, which cannot be handled by the existing 2D models. It is revealed that three-dimensional characteristics systematically affect the distribution of soil response around the circumference of the underwater pipeline. Based on new 3D model, the effects of wave and soil characteristics and trench configuration on the wave-induced seabed instability are discussed in detail.