The use of concrete gravity structures as alternatives to piled steel platform has greatly increased the engagement of geotechnical engineers in the overall analysis, design and installation of fixed offshore platforms. This state-of-the-art report does not pretend to give a complete and comprehensive review within the pages allotted for the contribution. It constitutes an updating of the reports presented earlier by Bjerrum (1973) and Eide (1974) and is mainly based on experience at the Norwegian Geotechnical Institute (NGI). Some significant advances have been made in theory and practice over the last couple of years, and most importantly, the experience and recorded data is available from the installation phase and the later performance of fixed platforms in the North Sea. The topics discussed are: (A) Site Exploration and Soil Testing: (1) Site Investigation; (2) Interpretation of Results from In-Situ Testing; (3) Laboratory Determination of Cyclic Soil Behaviour; (4) Model Tests to Determine Soil Behaviour. (B) Gravity Structures: (5) Analysis of Dynamic Soil-Structure Interaction; (6) Foundation Deformations; (7) Soil Foundation Stability under Extreme Loads; (8) Field Instrumentation and Platform Installation; (9) Performance Observations. (C) Piled Structures: (10) Pile Installation Procedures; (11) Skin Friction and Tip Resistance; (12) Pile Movements and Bending Moments.

  • Availability:
  • Corporate Authors:

    Norwegian Geotechnical Institute

    P.O. Box 40 Tasen
    Oslo 8,   Norway 
  • Authors:
    • Hoeg, K
  • Publication Date: 1976

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Filing Info

  • Accession Number: 00142610
  • Record Type: Publication
  • Source Agency: Norwegian Geotechnical Institute
  • Files: TRIS
  • Created Date: Dec 15 1976 12:00AM