Ice Engineering - study of Related Properties of Floating Sea-Ice Sheets and Summary of Elastic and Viscoelastic Analyses

• Main Author: Vaudrey, K D
• Other Authors: CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CA
• Format: Text
• Language: English
• Published: 1977
• Subjects: Snow; Ice and Permafrost; Mechanics; *SEA ICE; BEARING STRENGTH; COMPRESSIVE PROPERTIES; ELASTIC PROPERTIES; FINITE ELEMENT ANALYSIS; FLEXURAL STRENGTH; FLOATING BODIES; VISCOELASTICITY; PE62760N; WUYF5255500101002; Ice; Ice Sheet; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA051184; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA051184

This report summarizes approximately 12 yr of research effort by the Civil Engineering Laboratory (CEL) for developing engineering data and analytical capability for calculating operational bearing capacity of sea-ice sheets. The objectives of the report are: (1) to summarize the CEL elastic and viscoelastic experimental programs; (2) to review the two CEL-developed finite- element techniques for analyzing the structural behavior of the material; and (3) to present bearing capacity limits for both short- and long-term ice-sheet operations. At the outset of this research program little engineering data and only limited analytical techniques were available to assist the practitioner in evaluating ice-sheet bearing strength. Though much still remains to be learned, it is now possible to make qualitative engineering predictions on bearing strength as a result of the comprehensive laboratory and field research program directed at defining the tensile strength, compressive strength, flexural strength, elastic modulus, creep behavior, and their relationship to temperature and salinity. Bearing strength analysis, using the CEL-developed finite-element computer codes, can now be based on the material properties corresponding to the actual temperature and salinity gradient existing across the vertical profile of the ice plate.