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Title: Mechanics of penetration of piles into permafrost
Authors: Colorado School of Mines. Research Foundation.
Charest, Jacques.
Duler, Philippe.
Rinehart, John Sargent, 1915-
Keywords: Piling
Civil engineering
Frozen ground
Frozen soils
Soil mechanics
Pile driving
Permafrost physics
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 122.
Description: Technical Report
Summary: A comprehensive study was made of rapid pile driving into permafrost. The experimental work was limited to the study of piles alone. Laboratory tests were conducted by driving various mdel piles with guns into artificial permafrost. A single series of field tests was made near Fairbanks, Alaska, in which hollow, circular, full-size piles were launched into permafrost, using an Army practice solid-fuel rocket as the driving agent. Penetration was studied as a function of impact velocity, mass, and pile-shape factor. In both laboratory and field tests the ratio of pile penetration to maximum transverse pile dimension was limited to less than 20. The artificial permafrost used for most of the laboratory tests was prepared from graded Ottowa sand, type Wausau 3.0, saturated with water and frozen at -6°C. This mixture has an average density of 1.77 g/cm^3 and an average water content of 23 percent. Other more limited testing was done with a few other types of permafrost made with bauxite, fine Ottowa sand, pure ice, Golden sand, and ground silica. The similarity of results obtained with different types of artificial permafrost indicates that the relationships developed in the laboratory could be applicable to field-test results.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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