Accession Number:

ADA025163

Title:

Evaluation of Substitute Input for NCEL Bomb Damage Repair Code

Descriptive Note:

Final rept. 6 Jan-6 Oct 1975

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s):

Report Date:

1976-03-01

Pagination or Media Count:

60.0

Abstract:

This research project was concerned with the evaluation of substitute input to a computer program which is used to analyze the performance of repaired bomb craters. The typical materials used in the rapid repair of bomb craters were tested in various states of stress to obtain soil strength and deformation parameters for use in the computer code. A concrete sand, two gravels, and a well-graded crushed limestone were tested in hydrostatic compression, constant mean normal stress, and triaxial compression for evaluation of their nonlinear bulk moduli, shear moduli, and moduli of elasticity. Laboratory testing was performed with a modified Hveem Stabilometer. Bulk and shear moduli were inputted to the axisymmetric, finite-element computer code and the nonlinear results were compared with the linear results. Triaxial compression confining pressures are suggested for the selected materials. With the linear moduli computed from the triaxial compression tests performed at these pressures, deflections equivalent to those computed with nonlinear moduli can be computed. The computer input was thereby reduced and laboratory testing was greatly simplified.

Subject Categories:

  • Soil Mechanics
  • Numerical Mathematics
  • Computer Programming and Software
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE