Accession Number : AD0834029

Title :   STATIC ARCHING TESTS ON CYLINDERS BURIED VERTICALLY IN A PARTIALLY SATURATED LOW-PLASTICITY SOIL.

Descriptive Note : Technical rept. Aug 65-Jun 67,

Corporate Author : NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s) : Abbott, Phillip A. ; Mitchell, Stephen C.

Report Date : APR 1968

Pagination or Media Count : 66

Abstract : Data are presented from static arching tests using right-circular cylinders buried vertically in a soil having a Unified Soil Classification of CL. Of primary interest in the tests was the total average axial load carried by a cylinder when buried in a soil medium having a uniform static pressure applied at the surface. (All cylinders were buried more than 2.5 diameters beneath the soil surface so that they could be considered as fully buried.) Principal variables were the axial stiffness of the cylinder, the soil stiffness, the overpressure level, and the configuration of the cylinder within the soil. (Cylinders were tested with bases both resting on a rigid foundation and floating in the soil.) A 10-percent moisture content was used for all tests, and all structures had provisions for minimizing the development of side-shearing stresses. All data were compared with theoretical predictions based on a formula developed by assuming no failure in the soil and used in conjunction with previously reported tests in which 20-30 Ottawa sand was the medium. In most cases reasonable agreement between test data and theoretical predictions was obtained. The peak overpressure applied in any test was 400 psi, but most tests were conducted to 140 psi. (Author)

Descriptors :   (*UNDERGROUND STRUCTURES, STRUCTURAL PROPERTIES), CYLINDRICAL BODIES, STRESSES, LOADS(FORCES), PLASTIC PROPERTIES, SOILS, MOISTURE, SOIL MECHANICS.

Subject Categories : Soil Mechanics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE