Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils

Adriano Castelo, David White, Yinghui Tian

Research output: Contribution to journalArticle

Abstract

Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is bench-marked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.

Original languageEnglish
Pages (from-to)671-683
Number of pages13
JournalOcean Engineering
Volume172
DOIs
Publication statusPublished - 15 Jan 2019

Cite this

@article{98c4d6380a0144dcb56d07bc27431f5c,
title = "Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils",
abstract = "Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is bench-marked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.",
keywords = "Axial resistance, Pipe-soil interaction, Pipeline walking, Finite-element modelling, Offshore engineering",
author = "Adriano Castelo and David White and Yinghui Tian",
year = "2019",
month = "1",
day = "15",
doi = "10.1016/j.oceaneng.2018.11.037",
language = "English",
volume = "172",
pages = "671--683",
journal = "Ocean Engineering",
issn = "0029-8018",
publisher = "Pergamon",

}

Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils. / Castelo, Adriano; White, David; Tian, Yinghui.

In: Ocean Engineering, Vol. 172, 15.01.2019, p. 671-683.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils

AU - Castelo, Adriano

AU - White, David

AU - Tian, Yinghui

PY - 2019/1/15

Y1 - 2019/1/15

N2 - Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is bench-marked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.

AB - Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is bench-marked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.

KW - Axial resistance

KW - Pipe-soil interaction

KW - Pipeline walking

KW - Finite-element modelling

KW - Offshore engineering

U2 - 10.1016/j.oceaneng.2018.11.037

DO - 10.1016/j.oceaneng.2018.11.037

M3 - Article

VL - 172

SP - 671

EP - 683

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

ER -