ICE AND MARINE STRUCTURES; PT. 3, THE IMPORTANCE OF DESIGN ALTERNATIVES

Discusses environmental factors in areas of sea ice. Two examples are analyzed, with unworkable alternatives included to bring out some popular misconceptions. A small boat harbor in an estuary, on an unprotected beach with tidal currents parallel to beach and reversing with each tide, ice thickness of 2 feet, floes up to 2,000 feet, and frequent strong onshore winds, is best served by a dock structure with solid skirting of piles in the tidal range but open piling below low tide to provide water flow under the dock to sweep ice from the lee side. For a permanent offshore drilling platform with four--legged substructure, the design must take into account the compressive strength of ice (equations given in pt. 2 of this series of articles), rate of loading, strength variation with depth of ice, and pressure ridge loading. As an alternative, a conical section of the leg within the tidal range is suggested to fail an ice sheet by bending. The nature of such failure is described and equations for solving design problems are given.

• Corporate Authors:

  Gulf Publishing Company

  Box 2608
  Houston, TX  United States  77001
• Authors:
  • Peyton, H R
• Publication Date: 1968

Media Info

• Features: References;
• Pagination: p. 51-60
• Serial:
  • Ocean Industry
  • Volume: 3
  • Issue Number: 12
  • Publisher: Gulf Publishing Company

Subject/Index Terms

• TRT Terms: Force; Harbors; Ice; Marine terminals; Offshore platforms; Offshore structures; Strength of materials
• Old TRIS Terms: Harbor structures; Ice forces on structures; Ice strength
• Subject Areas: Bridges and other structures; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00037572
• Record Type: Publication
• Source Agency: Arctic Institute of North America
• Files: TRIS
• Created Date: Nov 10 1973 12:00AM