[en] In order to predict delayed settlements of heavy structures, the authors decided to use the elasto-viscoplastic model of Dafalias-Kaliakin. To identify the parameters of the constitutive equations, they use above all the data of a new in-situ test, the Diflupress L.D. designed to approach the creep behavior of soil. In a first section, the principle of the model is presented. Then, the important parameters of the model are identified, mostly from in-situ test data since the laboratory tests data are not numerous and reliable. Finally, a study of sensitivity on the parameters which influence the viscoplastic response of the model is made.
Bufi (1990) New long-term pressuremeter creep test. Proceedings of the Third International Symposium on Pressuremeters , Thomas Telford, London; 95-104.
Leidwanger, Flavigrry, Giafferi, Catel, Bufi (1994) Delayed settlements and Diflupress L.D. Proceedings of the Tenth International Conference on Soil Mechanics and Foundations Engineering, New-Delhi; .
Leidwanger, Flavigny, Chambon, Giafferi, Catel, Bufi (1994) Application of the “Diflupress L.D.” field test to settlement calculation. Settlement 94, ASCE Conference on Vertical and Horizontal Deformations for Foundations and Embankments, Texas A&M University; .
Cambou, Bahar, Chapeau, Kazarian (1990) Numerical analysis of pressuremeter tests. Application to the identification of constitutive models. Proceedings of the Second European Specialty on Numerical Methods in Geotechnical Engineering , Santander; 369-380.
Bahar, Cambou, Costaz, Fry, Bufi, Catel (1992) Prediction of long term settlement of nuclear power plants using pressuremeter tests. Proceedings of NUMOG IV 2:851-859.
Asaoka, Matsuo (1980) An inverse problem approach to settlement prediction. Soils and Foundations 20(N∘4):53-66.
Ledesma, Gens, Alonso (1986) Identification of parameters in a tunnel excavation problem. Proceedings of the Second International Symposium on Numerical Models in Geomechanics , Ghent; 333-344.
Ledesma, Gens, Alonso (1991) Identification of parameters on nonlinear geotechnical models. Proceedings of the International Conference on Computer Methods and Advancs in Geomechanics, Cairns 2:1005-1010.
Arai, Otha, Kojima (1984) Estimation of soil parameters based on monitored movement of subsoil under consolidation. Soils and Foundations 24(N∘4):95-108.
Arai, Otha, Kojima (1987) Estimation of non linear constitutive parameters based on monitored movement of subsoil under consolidation. Soils and Foundations 27(N∘1):35-49.
Leidwanger (1993) Etude des tassements différés à partir de résultats d'essais au Diflupress Longue Durée. Thèse de doctorat , Université J. Fourier, Grenoble; 1.
Kaliakin, Dafalias, Hermann (1987) Time Dependent Bounding Surface Model for Isotropic Cohesive Soils. Second International Conference on Constitutive Laws for Engineering Materials: Theory and Application, Tucson Arizona, Notes for a short course, held in conjunction with the; .
Dafalias, Herrmann (1982) Bounding Surface Formulation of Soil Plasticity. Soil Mechanics — Transient and Cyclic Loads, Chapter 10, G.N. Pande, O.C. Zienkiewicz, John Wiley & Sons Ltd; .
Kaliakin, Dafalias (1990) Theoretical Aspects of the Elastoplastic-Viscoplastic Bounding Surface Model for Cohesive Soils. Soils and Foundations 30(N∘3):11-24.
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Kaliakin, Dafalias (1991) Details regarding the elastoplastic-viscoplastic bounding surface model for isotropic cohesive soils. Civ. Eng. Rep. n∘ 91-1, Dept. of Civil Eng., University of Delaware, Newark, DELAWARE, U.S.A; .
Charlier (1987) Approche unifiée de quelques problèmes non linéaires de mécanique des milieux continus par la méthode des éléments finis (grandes déformations des métaux et des sols, contact unilatéral de solides, conduction thermique et écoulement en milieux poreux. Thèse de doctorat, Université de Liège; .
Li, Charlier, Schroeder, Cescotto (1992) Evaluation et Implémentation du modèle de Dafalias-Kaliakin pour les Argiles dans un contexte de grandes déformations. Proceedings of the International Colloque Géotechnique et Informatique, Paris; .
Li (1992) Contribution à la modélisation du comportement mécanique des argiles avec prise en compte de la consolidation secondaire. Mémoire de Maîtrise, Université de Liège; .
Perzyna (1963) The Constitutive Equations for Rate Sensitive Plastic Materials. Quarterly of Applied Mathematics 20.
Cescotto (1989) General Strategy for Nonlinear Finite Element Formulation. Proceedings of the 5th Int. Symposium on Numerical Methods in Engineering , R. Gruber et al., Springer Verlag; 1:155-164.
Azzouz, Krizek, Corotis (1976) Regression analysis of soil compressibility. Soils and Foundations 16(N∘2):19-29.
Leroueil, Vaughan (1990) The general and congruent effects of structure in natural soils and weak rocks. Geotechnique 50(N∘3):467-488.
