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Mitigation of Infilling Around Pipelines With Cyclic Lateral Deflections

[+] Author Affiliations
Ryan Phillips, Rodney McAffee, Sylvia Dooley

C-CORE, St. John’s, NL, Canada

Michael Martens

TransCanada Corporation, Calgary, AB, Canada

Paper No. IPC2016-64350, pp. V001T03A048; 8 pages
doi:10.1115/IPC2016-64350
From:
  • 2016 11th International Pipeline Conference
  • Volume 1: Pipelines and Facilities Integrity
  • Calgary, Alberta, Canada, September 26–30, 2016
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-5025-1
  • Copyright © 2016 by ASME

abstract

The soil response around a high temperature pipeline proposed for construction was evaluated. Infilling of backfill around pipelines at side bends subjected to temperature changes may accumulate during cyclic displacements leading to ratcheting and possibly buckling of the pipeline. A medium-scale laboratory model testing program was used to gain a better understanding of how silty sand backfill migrates around a pipeline when subjected to cyclic lateral loading. Several mitigation techniques using geosynthetics and compressible materials were evaluated in order to both delay and reduce the net downward soil movement from pipe displacement cycles.

Copyright © 2016 by ASME
Topics: Pipelines , Deflection

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