Decommissioning of offshore piles using vibration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

This paper reports on an investigation of the feasibility of decommissioning offshore tubular piles with vibration. A series of 1g model pile tests using a scaled vibration source and a 400mm long open-ended steel pile were conducted in loose and dense dry sand. Under forced vibration, the pull-out load of the pile was reduced by 36% in dense sand and to the self-weight of the pile in loose sand. Back-calculation reveals a correlation between the lower tensile capacity of the pile and reduced interface friction angles during the application of vibration indicating that such a method may be valuable in future decommissioning projects.

Original languageEnglish
Title of host publicationProceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
EditorsJin S. Chung, Howard H. Wang
Place of PublicationUnited States
PublisherInternational Society of Offshore and Polar Engineers
Pages666-673
Number of pages8
Volume2
ISBN (Electronic)9781880653975
Publication statusPublished - 2017
Event27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
Duration: 25 Jun 201730 Jun 2017

Publication series

NameProceedings of the International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Volume2
ISSN (Print)1098-6189

Conference

Conference27th International Ocean and Polar Engineering Conference, ISOPE 2017
CountryUnited States
CitySan Francisco
Period25/06/1730/06/17

Keywords

  • Decommissioning
  • Extraction
  • Pile
  • Tensile capacity
  • Vibration

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  • Research Output

    • 2 Conference contribution

    Model Testing of Recovery Loads for Decommissioning Skirted Subsea Structures

    Brennan, A., Brown, M., Knappett, J., McMillan, C., Aldaikh, H., Small, A. A. & Morrow, D., 12 Sep 2017, Offshore Site Investigation and Geotechnics: Smarter Solutions for Future Offshore Developments: Proceedings of the 8th International Conference, held 12–14 September 2017 at the Royal Geographical Society, London. Society for Underwater Technology, Vol. 1-2. p. 749-756

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • Improving the performance of offshore pipeline ploughs using vibration

    Zefirova, A., Brown, M. J., Brennan, A. J. & Boyes, S., 2012, Proceedings of the 7th International Conference on Offshore Site Investigation and Geotechnics: Integrated Geotechnologies - Present and Future. Society for Underwater Technology, p. 395-401 7 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • Activities

    • 1 Membership of group

    Cite this

    Davidson, C., Brown, M., Brennan, A., & Knappett, J. (2017). Decommissioning of offshore piles using vibration. In J. S. Chung, & H. H. Wang (Eds.), Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017 (Vol. 2, pp. 666-673). (Proceedings of the International Ocean and Polar Engineering Conference; Vol. 2). International Society of Offshore and Polar Engineers. http://www.isope.org/publications/proceedings/ISOPE/ISOPE%202017/data/64789-isope-vol2-1.3617615/t003-1.3618165/f014-1.3618218/a099-1.3618231.html