Three-dimensional pipeline element formulation for global buckling analysis of submarine pipelines with sleeper

Jihui Ning, Tong Lin, Siwei Liu, Rui Bai, Wei Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Submarine pipelines can utilize sleepers to control global buckling location, which mitigates potential risks under high temperature and pressure. However, pipelines with sleepers require execution in three-dimensional space and experience lateral buckling modes. As such, this paper proposes a 3D pipeline element for lateral buckling analysis, building on previous 2D element formulations. This new element considers non-linear pipe-soil interactions, thermal expansion, axial load, initial imperfections, large deflection, and other major factors that affect lateral buckling. The derivations of the 3D pipeline element are provided in detail, and the numerical analysis procedure is elaborated. To validate the accuracy and efficiency of the proposed 3D pipeline element, several examples are presented.

Original languageEnglish
Article number103428
JournalMarine Structures
Volume90
DOIs
Publication statusPublished - Jul 2023

Keywords

  • 3D pipeline element
  • Global buckling
  • High temperature high pressure
  • Nonlinear pipe-soil interactions
  • Sleeper
  • Unburied subsea pipelines

ASJC Scopus subject areas

  • General Materials Science
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Three-dimensional pipeline element formulation for global buckling analysis of submarine pipelines with sleeper'. Together they form a unique fingerprint.

Cite this