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The bearing capacity of ice covers under static loads

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada
FormatText, Article
Subjectbearing capacity; ice; static loads; strain; deflection
Abstract
There is a growing interest in the use of ice covers to support loads for extended periods of time. Current practice for determining safe ice thickness for over-ice operations is essentially empirical, being based on experience and limited prototype testing. In this paper, the implications of a design criterion for the static load problem, which limits the maximum vertical deflection to the freeboard, are considered. An expression relating strain and deflection is developed. Field results for a static loading case were analyzed and indicated that the time dependent deflected shape of the ice cover could be represented using elastic theory and a time dependent Young' s modulus. By combining the strain-deflection relationship with the deflection limit criterion it is shown that strains are small (i.e. less than 10[-3] and in the primary stage of creep) for most cases of practical interest. A method, based on a correlation of observed deflection rates and associated initial elastic stresses from reported cases of static loading of ice covers, is proposed both as a design approach and a framework for analysis of field data.
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  • Canadian Journal of Civil Engineering 3, no. 2 (June 1976): 288–293.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-676
NRC numberNRCC 15253
NRC-IRC-2800
NPARC number20374339
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Record identifierb7f20cda-8d19-45c5-8a34-e8e143adf4b4
Record created2012-07-23
Record modified2024-03-13
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