ARCTIC OFFSHORE DEEPWATER ICE-STRUCTURE INTERACTIONS

A comprehensive theoretical analysis of deep-water Arctic ice-structure interactions was partially described in this paper. Following identification of a severity hierarchy of ice formations and associated strengths for the 200 ft. water depth range in the South Beaufort Sea, quasi-static and dynamic interactions of these formations with a steel monocone production platform structure were analyzed. The ice formations identified included sheets, ridges, and ice islands. Quasi-static analysis of sheet ridge composites impinging against the structure included development of certain new failure and clearing mechanisms. Dynamic analysis of island-structure collisions was approached utilizing energy balance principles. Probabilistic design theory was applied to the determination of result statistical bounds consistent with severity ratings of input variables. Numerical results for representative quasi-static and dynamic cases were presented and discussed. Certain nongoverning interactive modes, including pile-up and in-plane ridge flexure, were also discussed briefly. Conclusions and recommendations for further work were presented.

  • Supplemental Notes:
    • Proceedings of the Eleventh Annual OTC held in Houston, Texas April 30-May 3 1979, Volume 4.
  • Corporate Authors:

    Offshore Technology Conference

    6200 North Central Expressway
    Dallas, TX  United States  45206
  • Authors:
    • Bercha, F G
    • Stenning, D G
  • Publication Date: 1979

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Filing Info

  • Accession Number: 00195807
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: Volume 4 Proceeding
  • Files: TRIS
  • Created Date: Aug 15 1979 12:00AM