A MODEL FOR THE BEHAVIOUR OF OVERCONSOLIDATED SOIL

A mathematical model is formulated to represent the stress-strain behaviour of overconsolidated soil. The full range of behaviour from lightly to heavily over-consolidated states is covered. The basis of the model is the utilization of a constitutive equation for a work-hardening plastic material. The model fits into the general framework provided by the critical state view of soil behaviour. As with the other critical state models four parameters characterize a particular soil. These are determined from routine laboratory tests. The object of the model is to enable good qualitative predictions of a wide range of soil behaviour to be made using only four easily measurable parameters. The paper is confined to modelling behaviour under the stress conditions imposed in the conventional triaxial apparatus and oedometer, but extension to more general stress systems is possible. In part I, the model is developed for material with a spherical past stress history; in part II, it is extended so that loading from an initial condition with unequal principal stresses is covered. A particularly useful aspect of this latter feature of the model is the ability to handle repeated loading.(a) /TRRL/

Media Info

  • Features: Figures; References;
  • Pagination: p. 1-25
  • Serial:
    • GEOTECHNIQUE
    • Volume: 28
    • Issue Number: 1
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00179185
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS, STATEDOT
  • Created Date: Sep 27 1978 12:00AM