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Adfreeze strength of model piles in frozen soil under dynamic loads



Adfreeze strength of model piles in frozen soil under dynamic loads



Collection Nordicana 57(Pages 1217-1221



Based on experiments, this paper discusses the adfreeze strength of model piles under dynamic loads. The test results indicate that the adfreeze strength under dynamic loading decreases rapidly with elapsed time under all test conditions, and that the decrease speed is faster than that under static loading. Under the same test conditions, adfreeze strength decreases linearly with increasing frequency of dynamic loading. The moisture content of frozen soil around model piles has a significant effect on the adfreeze strength. As the moisture content of frozen soil approaches the saturation value, the adfreeze strength of model piles reaches a maximum. The rigidity of the pile foundation has an obvious effect on the adfreeze strength of concrete piles: the greater the rigidity, the lower the adfreeze strength. This effect is not obvious for steel-pipe piles.

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Accession: 029909088

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