A NUMERICAL STUDY OF CONE PENETRATION IN CLAY

This paper presents results from large-displacement finite-element analysis of cone penetration into clay. The soil is idealised as a homogeneous elastic-perfectly plastic material obeying a Tresca yield criterion, and the analysis is carried out using an `arbitrary Lagrangian-Eulerian' technique, with periodic remeshing and interpolation of all field values. This allows the cone to be advanced by several diameters, thus achieving steady-state conditions. A full parametric study has been undertaken, quantifying the influences of the rigidity index, in situ stress anisotropy and the cone roughness. A theoretical correlation for the cone factor, N(sub kt), is developed from this study, and compared with previous correlations developed using the strain path method. Characteristics of the stress distribution around the cone, the extent of the plastic zone and apparent incremental movements are discussed, allowing new insights into this problem. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Lu, Q
  • RANDOLPH, M F
  • Hu, Yue
  • BUGARSKI, I C
• Publication Date: 2004-5

Language

• English

Media Info

• Features: References;
• Pagination: p. 257-67
• Serial:
  • GEOTECHNIQUE
  • Volume: 54
  • Issue Number: 4
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Clay; Cone penetrometers; Finite element method; Plasticity; Stresses; Test procedures
• ITRD Terms: 4177: Clay; 6178: Cone penetrometer; 6490: Finite element method; 5922: Plasticity; 5575: Stress (in material); 6288: Test method
• Subject Areas: Materials;

Filing Info

• Accession Number: 00976988
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Aug 4 2004 12:00AM