RELIABILITY OF CONSTITUTIVE PARAMETERS FOR A SOIL OBTAINED FROM LABORATORY TEST DATA. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3

A series of laboratory tests are conducted using a fluid-cushion cubical device on clay soil sampled from the US 77 highway project near Ponca City, Oklahoma. Three sets of test data are selected to evaluate and study sensitivity of material constants for two constitutive models (delta 0 and delta 1) based on the hierarchical approach developed by Desai and co-workers. The first data set includes only two tests along two stress paths, while the other sets include additional tests performed along different stress paths. A relatively low variance is observed for the elastic, failure, and hardening parameters, compared with the non-associative parameter for the delta 1 model. Parameters determined from the data set i showed a close comparison between the back-predicted and observed stress-strain response. It is concluded that the evaluation of material constants for a constitutive model can be highly sensitive to a number of factors such as consistency, processing and discretization of test data. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/906191809X
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000
• Authors:
  • Zaman, M M
  • Honarmandebrahimi, A
  • Laguros, J G
• Publication Date: 1988

Media Info

• Features: References;
• Pagination: p. 2001-08
• Serial:
  • Publication of: Balkema (AA)
  • Publisher: AA Balkema

Subject/Index Terms

• TRT Terms: Clay; Conferences; Deformation; Evaluation; Forecasting; Mathematical models; Soil mechanics; Stresses; Tests
• ITRD Terms: 4177: Clay; 8525: Conference; 5595: Deformation; 9020: Evaluation (assessment); 132: Forecast; 6473: Mathematical model; 5755: Soil mechanics; 5575: Stress (in material); 6255: Test
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00492715
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-6191-809-X
• Files: ITRD, TRIS
• Created Date: Mar 31 1990 12:00AM