Confined compressive strength of sea ice

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ConferenceVTT Symposium 27, The 7th International Conference on Port and Ocean Engineering under Arctic Conditions: 05 April 1983, Helsinki, Finland
Pages243253; # of pages: 11
Subjectice; compressive strength; particle size distribution; beaufort sea; vertical (a-type) and lateral (b-type) ice confinement conditions; ice structure effects; granular ice; columnar ice; basal- plane glide; plasticity theory; plane strain; plane stress; yield surface; freshwater ice comparison
AbstractThe confined compressive strength has been measured for both vertical (A-type) and lateral (B-type) confinement conditions for sea ice from the Beaufort Sea. The results show that the confined compressive strength is extremely sensitive to the structure of the ice. For granular ice, the confined compressive strength for both A and B type confinement is 19% higher than for unconfined compressive strength. For columnar ice, the compressive strength for A- type confinement can be four times as high as the strength of unconfined or B-type confined compressive strength. These results are explained in terms of basal-plane glide in the ice. The results of the tests are used to evaluate the coefficients of an n-type yield function from plasticity theory. The functional form of the yield surface for the cases of plane strain and plane stress in the plane of the ice cover are presented and compared to the corresponding functions for freshwater ice.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number22807
NPARC number20375311
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Record identifierd95e8b3b-5cf0-4a0b-86b7-24e92c0ac5da
Record created2012-07-23
Record modified2016-05-09
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