SHEAR STRENGTH OF SOIL IN A GENERAL STRESS FIELD WITH DISCUSSION

A theory is developed that predicts quantitatively the effects of the intermediate principal stress on the strength of cohesionless material. The strength under conditions other than those of the conventional triaxial test can be computed from triaxial test data by this theory. The predictions of the theory for cohesionless soils are validated by the previously published experimental results of other investigators. Preliminary test data on cohesive soils under conditions of plane strain indicate that the theory may be valid for the strength of non-overconsolidated cohesive soils expressed on an effective stress basis. In the discussion following the article, N.D. Nathan objects to the upper and lower bounds for the angle of internal friction on the grounds they rest on only presently available experimental data and no a priori reasons are given. He also contends that in pursuing the relationships between strains in various stress conditions, previous strain history should be borne in mind. W. Wittke states that the two basic assumptions made in the paper (soil behaves elastically until failure occurs and that the strain at failure in a triaxial and a plane-strain test are equal) do not correspond with the test results of Meyerhof and as a result, the test results could be fortuitous. If the theory, for instance, is applied to the tests results obtained with regular packings of spheres it leads to wrong values.

  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  USA  19428-2957
  • Authors:
    • Finn, W D
    • Mittal, H K
  • Discussers:
    • Nathan, N D
  • Publication Date: 1963-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 42-51
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00095092
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 7 1975 12:00AM