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EFFECT OF STRESS AND TEMPERATURE HISTORY ON CREEP BEHAVIOR OF STRAIGHT AND ENLARGED-BASE ANCHORS IN FROZEN SILTY SOIL
Session: Foundations in Cold Regions / Fondations en régions nordiques
Jean-Marie Konrad, Dép. de génie civil et génie des eaux, Université Laval (Canada)
Luc Boisvert, Dép. de génie civil et génie des eaux, Université Laval (Canada)
The objective of this project was to study the pullout creep behavior of anchors of different geometries embedded in a frozen silty soil. A cylindrical steel rod of 16 mm of diameter and a hybrid anchor having a coned-shaped enlarged base were tested at temperatures of -1,2°C and -0,6°C. Good agreement of creep behavior on cylindrical anchors with field data reported in the literature was observed. Important attenuations of the creep rates in time were recorded on enlarged base anchors, particularly at -1,2°C. Also, an important reduction of creep rate was observed after rest periods with cyclic temperatures.
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