Accession Number : AD0486100

Title :   THE INTERACTION OF BURIED STRUCTURES WITH GROUND SHOCK OF CONCEPTS OF PRELIMINARY DESIGN OF STRUCTURE PROJECTS FOR UNDERGROUND NUCLEAR DETONATIONS. APPENDIX B,

Corporate Author : ARMOUR RESEARCH FOUNDATION CHICAGO IL

Personal Author(s) : Wiedermann, A. H.

Report Date : JAN 1960

Pagination or Media Count : 74

Abstract : This report presents a theory or concept which can be used to estimate the forces acting on a buried structure when the structure is subjected to a ground shock wave. This work is intended to be applicable primarily for the type of rock found at the Nevada Test Site, such as white or reddish tuff. A discussion of the free field variables is given together with an idealization of the stress wave forms of interest. The basis of the soil-structure interaction concept lies in the assumption of the nature of the forces acting on the buried structure. The force acting on the structure is assumed to be composed of two parts. One, the wave force, is due to the sudden motion of the surrounding media and the subsequent state of stress in the ground shock wave. The other, the arching force is due to the local deformation or displacement of the structure relative to the surrounding media. The motion of the structure is governed by the usual equation of motion, however, in this treatment the forcing term has been split into two uncoupled terms. The wave force term is a function of time and the arching force term is a function of the relative displacement between the structure surface and its corresponding soil position. The response of the buried structure is given for a range of ground shock wave parameters, structure configurations and structure parameters, and includes some analysis of shock isolation systems. (Author)

Descriptors :   *NUCLEAR EXPLOSIONS), (*UNDERGROUND STRUCTURES, (*UNDERGROUND EXPLOSIONS, SHOCK WAVES), MATHEMATICAL PREDICTION, OSCILLATION, SOIL MECHANICS, VOLCANOES, IGNEOUS ROCK, STRESSES, EQUATIONS OF MOTION, SHOCK(MECHANICS), SHEAR STRESSES, STABILITY, MECHANICAL PROPERTIES, MECHANICAL WAVES, ROCK.

Subject Categories : Structural Engineering and Building Technology
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE