ASSESSING THE SAFETY OF OFFSHORE PILES BY DISPLACEMENT MONITORING

Underwater displacement gauges have been developed to monitor the foundation of offshore structures. These instruments can be used to verify the continuing satisfactory performance of large pile groups, provided criteria can be set for allowable permanent group displacements. Nonlinear finite element calculations are presented as a means of evaluating suitable limits, by relating the permanent displacements to the mobilised load factor, and results are given for the case of a 30 metre long pile installed in glacial till. The theoretical results are compared with data from onshore pile tests, and encouraging agreement is obtained. The extension from single pile to group behaviour is described, and the importance of separating creep and extreme loading effects is emphasised.

• Supplemental Notes:
  • Proceedings of the 4th International Conference on Behaviour of Offshore Structures, held Delft, The Netherlands, 1-5 July 1985, p. 611 [12 pp., 20 ref., 16 fig.]
• Authors:
  • Jardine, K J
  • Potts, D M
• Publication Date: 1985

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00689926
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM