In Situ Creep Analysis of Room in Frozen Soil

by Erik G. Thompson, Assoc. Prof.; Dept. of Civ. Engrg., Colorado State Univ., Ft. Collins, CO,
Francis H. Sales, Res. Civ. Engr.; U.S. Army Cold Regions Res. & Engrg. Lab., Hanover, NH,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1972, Vol. 98, Issue 9, Pg. 899-915

Document Type: Journal Paper


Creep displacement measurements of the roof and walls of an underground room in permafrost are analyzed by the finite element method and it was found that the in situ creep characteristics of the frozen silt agree closely with those determined by laboratory unconfined compressive creep tests performed on undisturbed samples of the in situ soil. The creep rate of the frozen Fairbanks silt and frozen gravel encountered in the Fox, Alaska, room can be considered independent of time and strain. This is in contradiction to creep characteristics found for similar soils with higher unit weight and lower ice contents.

Subject Headings: Soil analysis | Frozen soils | Soil compression | Finite element method | Field tests | Creep | Silt | Displacement (mechanics) | Alaska | United States

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