Accession Number:

ADA050481

Title:

An Evaluation of an Existing Procedure for Determining Shear Moduli at Depths by in situ Vibratory Technique

Descriptive Note:

Final rept. Mar-Apr 1966

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

Report Date:

1972-04-01

Pagination or Media Count:

140.0

Abstract:

The Corps of Engineers has been determining the dynamic characteristic of soil and pavement systems by the use of surface-induced vibrations for approximately 10 years. This non-destructive vibratory technique is utilized by all federal agencies involved in planning the design of space- craft launch and operation facilities, antiballistic missile sites, heavy weapons, air field and road construction, radar towers or structures to house delicate electronic equipment when accurate and quick information pertaining to the ability of the soils to resist deformation is required. The Corps of Engineers has been actively engaged in improving and developing equipment and procedures for determining the elastic moduli and thus the resistance to deformation of foundation soils by vibratory techniques. The basic theory assumes that the Rayleigh waves generated by the vertical oscillations of a vibrator on the soils surface are for all practical purposes considered to be shear-waves.

Subject Categories:

  • Soil Mechanics
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE