THE EFFECT OF INCREASING STRENGTHS WITH DEPTH ON THE BEARING CAPACITY OF CLAYS

By means of the theory of plasticity, solutions are obtained to the problem of bearing capacity of clay (0/=0) which is inhomogeneous in the vertical direction only. It is shown that the rate of increase of cohesion with depth plays the same role as density plays in the bearing capacity of homogeneous cohesive-frictional soils. When considered in relation to reclamation of swampy areas by sand filling, the results suggest that only very flat slopes of the edge of the filling are possible without the creation of a mud wave. The bearing capacity of rigid strip footings is shown to depend markedly on the breadth, and to a small extent on the roughness of the underside of the footing. The analysis can also be applied to the stability of embankments on soft soils. Finally, comparison between the plasticity and slip circle solutions reveals very servious over-estimates in the latter when inhomogeneity dominates. /Author/

Media Info

  • Features: Figures; References;
  • Pagination: p. 551-563
  • Serial:
    • GEOTECHNIQUE
    • Volume: 23
    • Issue Number: 4
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00260050
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 5 1974 12:00AM