Accession Number : AD0764058

Title :   Effect of Backpacking and Internal Pressurization on Stresses Transmitted to Buried Cylinders.

Descriptive Note : Technical rept. May 71-Jul 72,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Takahashi,S. K.

Report Date : MAY 1973

Pagination or Media Count : 48

Abstract : Various aspects of the behavior of buried cylinders associated with backpacking, internal pressurization, and slippage at the interface are considered. Parametric curves are presented for horizontally and vertically buried cylinders with and without backpacking. Four configurations of statically loaded, horizontally buried cylinders were considered: no backpacking, rectangular backpacking placed above the cylinder, backpacking placed around the top half of the cylinder, and backpacking placed completely around the cylinder. The cylinder without backpacking received the most vertical load, and the cylinder with backpacking completely around it received the least. When interface slippage was allowed, the circumferential stresses were nearly uniform at the crown, the springline, and the invert; for no slippage, the maximum compressive circumferential stresses occurred at the springline. Internal pressurization reduced compressive stresses and, hence, decreased the chances of buckling. (Modified author abstract)

Descriptors :   (*UNDERGROUND STRUCTURES, LOADS(FORCES)), PRESSURE, BUCKLING, MODULUS OF ELASTICITY, SHEAR STRESSES, SOIL MECHANICS, DEFORMATION, CYLINDRICAL BODIES, BLAST

Subject Categories : Structural Engineering and Building Technology
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE