A NOTE ON THE PLASTICITY SOLUTION TO THE STABILITY OF SLOPES IN INHOMOGENEOUS CLAYS

THE PROBLEM OF THE STABILITY OF A CUTTING IN CLAY IS CONSIDERED FROM THE STAND-POINT OF PLASTICITY THEORY. IT IS SHOWN THAT THE CLAY IS NOT REQUIRED TO HAVE ANY TENSILE STRENGTH AND THAT THE STABLE SLOPE ANGLE IS A FUNCTION OF THE RATIO OF THE RATE OF INCREASE OF COHESION WITH DEPTH TO THE DENSITY, BEING INDEPENDENT OF THE DEPTH OF THE CUTTING. THE PRACTICAL RANGE OF STABLE SLOPES IS 6.5-24.5 DEG. WITHIN THIS RANGE, AND FOR STEEPER SLOPES, THE OVERESTIMATE OF STABILITY BY THE SLIP CIRCLE ANALYSIS OF GIBSON AND MORGENSTERN IS HARDLY OF ENGINEERING SIGNIFICANCE. AN APPROXIMATE METHOD OF ANALYSIS, USING LIMIT THEOREMS, IS SUGGESTED FOR PROBLEMS IN WHICH SURFACE COHESION IS GREATER THAN ZERO. /TRRL/

  • Corporate Authors:

    University of Sydney

    School of Civil Engineering, Parramatta Road
    Sydney, New South Wales  Australia  2006
  • Authors:
    • BOOKER, J R
    • Davis, E H
  • Publication Date: 1971-11

Media Info

  • Features: Figures; References;
  • Pagination: 14 p.
  • Serial:
    • Issue Number: r185

Subject/Index Terms

Filing Info

  • Accession Number: 00237089
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R & D Rpt
  • Files: TRIS
  • Created Date: Sep 28 1973 12:00AM