STRESSES BENEATH GRANULAR EMBANKMENTS

A THEORETICAL AND EXPERIMENTAL STUDY OF THE STRESSES ALONG THE BASE OF A GRANULAR EMBANKMENT WAS COMPLETED. THE EXPERIMENTAL DATA CONSISTED OF MODEL EMBANKMENTS SUPPORTED ON A BASE WHICH COULD BE MADE RIGID OR DEFORMED INTO ANY SELECTED, VERTICAL PROFILE. A COMPARISON WAS MADE OF THE MEASURED STRESSES WITH VALUES PREDICTED BY THE LINEAR ELASTIC, ARCHING, AND PLASTICITY THEORIES. THE MODEL EMBANKMENTS WERE BUILT UP EITHER AS TRIANGULAR WEDGES INCREASED IN HEIGHT UNTIL THE SIDE SLOPES EQUALLED THE ANGLE OF REPOSE, OR IN CUMULATIVE HORIZONTAL LAYERS. IT IS SHOWN THAT THE LINEAR ELASTIC THEORY MANIFESTS THE PROGRESSIVE CHANGE IN STRESS DISTRIBUTION AS THE EMBANKMENT IS FORMED ON A RIGID BASE, AND THAT THE PEAK STRESS VALUES ARE APPROXIMATELY PREDICTED. THE ARCHING THEORY APPEARS TO BE INAPPLICABLE TO THE RIGID BASE SITUATION. THE IMPOSITION OF A VERTICAL SETTLEMENT PROFILE ALONE IS NOT SUFFICIENT TO DEVELOP A FULLY PLASTIC STATE AND HORIZONTAL DISPLACEMENTS WOULD BE NECESSARY. /AUTHOR/

  • Corporate Authors:

    University of Sydney

    Sydney, New South Wales  Australia  2006
  • Authors:
    • LEE, I K
    • Herington, J R
  • Publication Date: 1971-3

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 21 p.
  • Serial:
    • Volume: r167

Subject/Index Terms

Filing Info

  • Accession Number: 00236814
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R&d Rpt
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM