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Displacement of piles under dynamic loads in frozen soils

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada
FormatText, Article
ConferenceFourth Canadian Permafrost Conference, March 2, 1981
Subjectpermafrost; soils; frozen soils; alternating stresses; piles; displacement (movement); dynamic loads; bearing capacity; frozen sand; frozen natural soil; alternating load; wood piles; concrete piles
Abstract
The effect of a small alternating load superimposed on a static load on the displacement rate of piles in a frozen sand and a frozen natural soil has been studied at -2.2 degrees C. An alternating stress as small as 3 per cent of the static stress caused an increase in rate of displacement in the region where the displacement rate was decreasing with time, and doubled the steady-state displacement rate of both wood and concrete piles. Under dynamic loads the design life of pile foundations calculated on the basis of allowable settlement will be reduced or, alternatively, the bearing capacity of piles for dynamic loads will be smaller than the bearing capacity for static loads.
Publication date
In
  • Roger J.E. Brown Memorial Volume. Proceedings Fourth Canadian Permafrost Conference: 555–559.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1068
NRC numberNRCC 20767
NRC-IRC-1430
NPARC number20386080
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Record identifier345f53db-9de3-42f0-aaf5-675a765bb803
Record created2012-07-25
Record modified2024-03-22
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