Arching in Soils with Cohesion and Intergranular Friction.
Technical rept. Nov 71-Oct 72,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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The study was initiated to determine the feasibility of burying protective structures in a soil possessing both cohesion and intergranular friction. Idealized small-scale structures were buried in a compacted mixed soil, and static overpressure up to 150 psi were applied to the surface. Seven laboratory tests were conducted in which footing area, depth of soil cover, and overpressure magnitude were the major variables. Measurements were made to determine the soil strain, soil and structure displacement, radial soil stress, and the load reaching the structure. It was found that these soils have arching characteristics similar to those in cohesive soils and to those in granular soils. Arching decreases with increasing load from essentially 100 to a value that is dependent upon the existing intergranular friction. Author
- Soil Mechanics