Accession Number : AD0819539

Title :   EFFECTS OF GROSS INACCURACIES IN STRUCTURE ALIGNMENT AND SOIL RESISTANCE PROPERTIES ON THE RESPONSE OF BURIED STRUCTURES TO NUCLEAR BLAST LOADINGS.

Descriptive Note : Technical rept. 15 Apr 65-23 Jun 67,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF CIVIL ENGINEERING

Personal Author(s) : Haltiwanger, J. D. ; Blackburn, T. O.

Report Date : AUG 1967

Pagination or Media Count : 92

Abstract : This report presents the results of an analytical research effort aimed toward defining the degradation of structural integrity that may result when design conditions are not met during the construction of hardened facilities. Parameters of primary concern were: (1) variations in the soil resistance around buried structure (nonuniform backfill properties); (2) variations in the structural geometry (improperly enforced construction tolerances); (3) variations in structural material properties. A computer program was developed to study the influence of variations in these parameters by representing the structure-soil system by a lumped-parameter model and solving the resulting equations by numerical integration. The program is restricted to planar reinforced concrete structures, with particular emphasis on buried arches and cylindrical structures. The program considers both elastic and inelastic response of the structure under any combination of axial force and bending. It is also capable of representing a variety of multilinear blast pressure pulses that may approach the structure from any direction in the plane of the structure. (Author)

Descriptors :   *UNDERGROUND STRUCTURES), (*NUCLEAR EXPLOSIONS, (*HARDENING, UNDERGROUND STRUCTURES), REINFORCED CONCRETE, SENSITIVITY, SOILS, DEGRADATION, COMPUTER PROGRAMMING, CYLINDRICAL BODIES, THICKNESS, STRUCTURAL PROPERTIES, COMPUTER PROGRAMS.

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE