Accession Number:

ADA210130

Title:

High-Amplitude Mobile Vibrator for Exciting Body and Surface Waves in Soil, Pavement And Structural Systems

Descriptive Note:

Final technical rept. Oct 1986-Dec 1988

Corporate Author:

TEXAS UNIV AT AUSTIN GEOTECHNICAL ENGINEERING CENTER

Personal Author(s):

Report Date:

1989-06-12

Pagination or Media Count:

23.0

Abstract:

A servo-hydraulic vibrator mounted on a transport vehicle was purchased from Teledyne Exploration, Corp. of Houston, TX. The vibrator was modified by Heaviquip, Inc. of Newkirk, OK to improve its performance in the low frequency range, 0.5 to 10 Hz. The resulting system has 1 a gross vehicle weight of approximately 44,000 lb 2 a useable frequency range of about 0.5 to 250 Hz and 3 a peak vertical force estimated of about 34,500 lb at frequencies above 5 Hz. The general function of the vibrator is the application of vertical steady-state, multiple-pulse or swept-sine loads to surface or embedded platens in geotechnical, pavement and structural systems. This equipment will form a key component in conducting field studies involving wave propagation in geotechnical materials to investigate 1 the effect of stress state on the velocity of small-strain body waves 2 nonlinear body wave propagation and 3 the dispersive characteristics of surface waves. Keywords Mechanical vibrators Pulse generators Field instrumentation Seismic source Mobile vibratory system Servo-hydraulic vibrator Field seismic testing Surface seismic waves body seismic waves.

Subject Categories:

  • Seismology
  • Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE