THE INFLUENCE OF PRE-FAILURE SOIL MODELLING ON THE BEHAVIOUR OF OPEN EXCAVATIONS

Prediction of displacements occurring around an excavation is influenced by the constitutive model used to describe the pre-failure behavior of the soil. An experimental program has been carried out, in which samples of reconstituted clay were subjected to stress paths similar to those occurring around excavations. A simple linear elastic-perfectly plastic soil model, and an elastic-plastic soil model with isotropic deviatoric hardening, have been calibrated on the experimental results, and then used in a finite element analysis to simulate the behavior of an open excavation supported by an embedded retaining wall propped at the top. Comparison among the results of the analyses permitted to assess the influence of pre-failure non linearity on the ground movements predicted around the excavation. Also, the influence of the initial in situ stress state, the wall stiffness and the drainage conditions were studied using the elastic-plastic soil model with isotropic deviatoric hardening.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9058090477
Corporate Authors:
AA Balkema

P.O. Box 1675
Rotterdam, Netherlands BR-3000
Authors:
- CALLISTO, L
- AMOROSI, A
- RAMPELLO, S
Conference:
- Twelfth European Conference on Soil Mechanics and Geotechnical Engineering (Proceedings)
- Location: Amsterdam, Netherlands
- Date: 1999-6-7 to 1999-6-10
Publication Date: 1999

Language

English

Media Info

Features: Figures; References; Tables;
Pagination: p. 89-96

Subject/Index Terms

TRT Terms: Clay; Clay soils; Excavations; Finite element method; Isotropic materials; Laboratory tests; Numerical analysis; Plastic soils; Retaining walls; Soil mechanics; Soil stabilization
Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

Accession Number: 00778723
Record Type: Publication
ISBN: 9058090477
Report/Paper Numbers: Volume 1
Files: TRIS
Created Date: Nov 22 1999 12:00AM