OVERVIEW OF STATE-OF-THE-PRACTICE MODELING OF OVERCONSOLIDATED SOILS

Numerical methods currently used in practice to predict the behavior of overconsolidated clays are described. The paper is not intended to be a state-of-the-art report but rather a state-of-the-practice report on techniques that have been used in practice. The discussion focuses on the Modified Cam Clay (MCC) model, which is widely accepted because of its practicality and simplicity. However, there are instances when more sophisticated overconsolidated soil models have been used. The paper presents an overview of the developments of soil elasto-plasticity followed by a detailed description of the MCC model and derivation of its incremental formulation. In addition, an example describing the calibration of the MCC parameters is presented. Step-by-step procedures are developed for drained and undrained predictions. A generalized form of the MCC model is described in which a third stress invariant is included in the formulation. A constitutive driver code is then implemented to allow for the numerical simulation of three-dimensional stress states. Finally, a brief description of the implementation of a constitutive driver into a finite element formulation is presented.

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 51-60
  • Monograph Title: Engineering properties and practice in overconsolidated clays
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00713476
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Nov 2 1995 12:00AM