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Title: Soil failure under inclined loads
Authors: Harrison, William L.
Keywords: Trafficability
Loads (forces)
Soil mechanics
Soil pressure
Soil tests
Shear strength
Computer programs
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 303.
Description: Research Report
Abstract: The most common example of the application of inclined loads to the soil is the plate-grouser. This consists of a strip footing with a vertical arm at one end. The most usual loading arrangement is one in which a fixed vertical load is applied and then the horizontal load is increased until failure occurs. A theory has been developed which will predict the maximum horizontal force, assuming that the soil is dense enough to be reasonably described by the Coulomb equation. The theory is based on slip line fields including wedges of soil that are not failing. These slip line fields vary systematically with the interface angle β and the angle of internal shearing resistance of the soil ϕ and they are a function of the direction of motion of the interface θ. A computer program is provided which will solve the problem directly if the direction of motion θ is given. It will also solve the more practical situation described above by an iterative procedure. The postulated slip line fields have been shown to be correct by means of glass box photographs giving excellent agreement with the theory. The predictions of passive pressure have been verified by a series of force measurements on quite large grousers driven into saturated clay, dry sand and an intermediate loam.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Report

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