UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Localised lateral buckling of partially embedded subsea pipelines with nonlinear soil resistance

Van Der Heijden, G; Wang, ZK; (2017) Localised lateral buckling of partially embedded subsea pipelines with nonlinear soil resistance. Thin-Walled Structures , 120 pp. 408-420. 10.1016/j.tws.2017.05.017. Green open access

[img]
Preview
Text
Van Der Heijden_pipeline.pdf - Accepted version

Download (1MB) | Preview

Abstract

Unburied partially embedded subsea pipelines under high temperature conditions tend to relieve their axial compressive force by forming localised lateral buckles. This phenomenon is traditionally studied as a kind of imperfect column buckling problem. We study lateral buckling as a genuinely localised buckling phenomenon governed by a different static instability, with a different critical load. No ad hoc assumptions need to be made. We combine this buckling analysis with a detailed state-of-the-art nonlinear pipe-soil interaction model that accounts for the effect of lateral breakout resistance. This allows us to investigate the effect of initial embedment of subsea pipelines on their load-deflection behaviour. Parameter studies reveal a limit to the temperature difference for safe operation of the pipeline, in the sense that for higher temperature differences a localised buckling mode has lower total energy than the straight unbuckled pipe. Localised lateral buckling may then occur if the pipe is sufficiently imperfect or sufficiently dynamically perturbed.

Type: Article
Title: Localised lateral buckling of partially embedded subsea pipelines with nonlinear soil resistance
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.tws.2017.05.017
Publisher version: http://doi.org/10.1016/j.tws.2017.05.017
Language: English
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1575674
Downloads since deposit
90Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item