Accession Number : AD0714165

Title :   Holding Strength of Piles in Ice.

Descriptive Note : Technical rept. May 67-Dec 69,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Stehle,N. S.

Report Date : OCT 1970

Pagination or Media Count : 42

Abstract : Piles are used in polar regions for many of the same purposes as in temperate regions, including foundations for structures in areas of permafrost and ice. The bearing capacity of piles set in permafrost and ice depends on the holding, or tangential adfreezing, strength. Tests were conducted at the Naval Civil Engineering Laboratory to determine the influence of pile material, shape, ground temperature, and backfill on tangential adfreezing strength in ice. General criteria for application were developed based on laboratory and field information. It was concluded that ground and air temperatures are the most influential parameters in determining the pile type and backfill. Design load, however, should be based on tangential adfreezing strength after long-term loading; this strength was determined to be one-half to two-thirds the tangential adfreezing strength after no previous loading. (Author)

Descriptors :   (*BEAMS(STRUCTURAL), PERFORMANCE(ENGINEERING)), (*SEA ICE, PIERS), ANTARCTIC REGIONS, FREEZING, PERMAFROST, LOADS(FORCES), CREEP, SOILS, FILLING, TEST METHODS

Subject Categories : Snow, Ice and Permafrost
      Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE