Bridge Foundations in Permafrost Areas Moose and Spinach Creeks,Fairbanks,Alaska.

摘要

Under a joint research project between the Alaska Department of Highways and the U.S. Army Cold Regions Research and Engineering Laboratory, cooperative field observations and tests were conducted during and following construction of the Moose and Spinach Creek bridges, Fairbanks, Alaska. Site investigations and bridge foundation designs of the Alaska Department of Highways, bridge pile installation data, and ground temperature conditions for a one-year period are presented. Two test piles and three anchor piles were installed in close proximity to the Moose Creek bridge and load settlement tests were performed. The capacity of a sand-water slurried test pile was less than 10 tons, while that of an adjacent driven pile was about 45 tons. Greater capacities could have been easily achieved by driving the piles to bedrock rather than a specified elevation. To prevent frost heaving of the shallow piles at Spinach Creek an anti-heaving soil-oil-wax mixture was employed to a depth of 10 feet.