The University of Southampton
University of Southampton Institutional Repository

Coupled consolidation analysis of pipe-soil interactions

Coupled consolidation analysis of pipe-soil interactions
Coupled consolidation analysis of pipe-soil interactions

Current design practice for pipe-seabed interaction in soft soils is generally based on the assumption of undrained behaviour throughout laying and subsequent operation. In reality, drainage and consolidation around a partially embedded pipe can have a marked effect on the vertical penetration and horizontal breakout resistance. In this paper, a large-deformation finite element methodology coupled with the "modified Cam clay" plasticity soil model has been developed to study the coupled consolidation behaviour of soil around partially embedded seabed pipelines. Simulations of penetration show that after laying, subsequent consolidation leads to further embedment by an amount dependent on the level of drainage that occurred during laying. Also, if the pipe is embedded under undrained conditions, the waiting period between laying and operation allows the soil around the pipe to consolidate under the pipe self-weight. The consolidation process results in an increase in the strength of the soil. The lateral breakout resistance and the direction of pipe movement on breakout thus depend on the consolidated strength of the soil around the pipe, as well as the applied loading. The envelopes of vertical-lateral combined loading bearing capacity differ markedly from those predicted assuming undrained behaviour throughout.

Clay, Consolidation, Finite element method, Offshore engineering, Penetration, Pipeline
0008-3674
609-619
Chatterjee, Santiram
0fdc4643-ca7d-42a3-9ea9-2c95047b8fbb
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633
Chatterjee, Santiram
0fdc4643-ca7d-42a3-9ea9-2c95047b8fbb
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633

Chatterjee, Santiram, White, David J. and Randolph, Mark F. (2013) Coupled consolidation analysis of pipe-soil interactions. Canadian Geotechnical Journal, 50 (6), 609-619. (doi:10.1139/cgj-2012-0307).

Record type: Article

Abstract

Current design practice for pipe-seabed interaction in soft soils is generally based on the assumption of undrained behaviour throughout laying and subsequent operation. In reality, drainage and consolidation around a partially embedded pipe can have a marked effect on the vertical penetration and horizontal breakout resistance. In this paper, a large-deformation finite element methodology coupled with the "modified Cam clay" plasticity soil model has been developed to study the coupled consolidation behaviour of soil around partially embedded seabed pipelines. Simulations of penetration show that after laying, subsequent consolidation leads to further embedment by an amount dependent on the level of drainage that occurred during laying. Also, if the pipe is embedded under undrained conditions, the waiting period between laying and operation allows the soil around the pipe to consolidate under the pipe self-weight. The consolidation process results in an increase in the strength of the soil. The lateral breakout resistance and the direction of pipe movement on breakout thus depend on the consolidated strength of the soil around the pipe, as well as the applied loading. The envelopes of vertical-lateral combined loading bearing capacity differ markedly from those predicted assuming undrained behaviour throughout.

Full text not available from this repository.

More information

Accepted/In Press date: 1 May 2013
e-pub ahead of print date: 6 May 2013
Published date: June 2013
Keywords: Clay, Consolidation, Finite element method, Offshore engineering, Penetration, Pipeline

Identifiers

Local EPrints ID: 419922
URI: https://eprints.soton.ac.uk/id/eprint/419922
ISSN: 0008-3674
PURE UUID: 3a43a90d-dce6-4138-bdb8-df2f7017d639
ORCID for David J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 23 Apr 2018 16:30
Last modified: 15 Aug 2019 00:25

Export record

Altmetrics

Contributors

Author: Santiram Chatterjee
Author: David J. White ORCID iD
Author: Mark F. Randolph

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×