Modeling Time-Dependent Behavior of Soft Sensitive Clay
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 137, Issue 11
Abstract
The paper focuses on investigating the destructuration process during time-dependent stress-strain evolution. For this purpose, various oedometer tests and triaxial tests on intact and reconstituted samples of soft sensitive Vanttila clay were carried out. Based on experimental observations, a new elastic viscoplastic model, extended from the overstress theory of Perzyna, is developed. The proposed model accounts for inherent and induced anisotropy, interparticle bonds and bond degradation, and viscosity. The determination of model parameters is discussed, demonstrating how all model parameters can be determined in a straightforward way and no additional test is needed for the proposed model compared to the modified Cam clay model. The model is implemented into a finite-element code, which enables coupled consolidation analyses. The model is used to simulate various strain-rate and creep tests under one-dimensional and triaxial conditions on the intact samples of Vanttila clay. The comparisons between experimental results and simulations show that the model has good predictive ability on the time-dependent behavior of a soft sensitive clay.
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Acknowledgments
The work presented was sponsored by the Academy of Finland (Grants 210744 and 1284594) and the European Community through the program “People” as part of the Industry-Academia Pathways and Partnerships project GEO-INSTALL (UNSPECIFIEDPIAP-GA-2009-230638).
References
Adachi, T., and Oka, F. (1982). “Constitutive equations for normally consolidated clay based on elasto-viscoplasticity.” Soils Found., 22(4), 57–70.
Asaoka, A., Noda, T., Yamada, E., Kaneda, K., and Nakano, M. (2002). “An elasto-plastic description of two distinct volume change mechanisms of soils.” Soils Found., 42(5), 47–57.
Berry, P. L., and Poskitt, T. J. (1972). “The consolidation of peat.” Géotechnique, 22(1), 27–52.
Burland, J. B. (1990). “On the compressibility and shear strength of natural clays.” Géotechnique, 40(3), 329–378.
Dafalias, Y. F. (1986). “An anisotropic critical state soil plasticity model.” Mech. Res. Commun., 13(6), 341–347.
Gens, A., and Nova, R. (1993). “Conceptual bases for a constitutive model for bonded soils and weak rocks.” Proc., Int. Symp. on Hard Soils—Soft Rocks, Athens, A. A. Balkema, Rotterdam, 485–494.
Graham, J., Crooks, J. H. A., and Bell, A. L. (1983). “Time effects on the stress–strain behaviour of natural soft clays.” Géotechnique, 33(3), 327–340.
Hinchberger, S. D., and Qu, G. (2009). “Viscoplastic constitutive approach for rate-sensitive structured clays.” Can. Geotech. J., 46(6), 609–626.
Hinchberger, S. D., and Rowe, R. K. (2005). “Evaluation of the predictive ability of two elastic-viscoplastic constitutive models.” Can. Geotech. J., 42(6), 1675–1694.
Jaky, J. (1948). “Earth pressure in soils.” Proc., 2nd Int. Conf. on Soil Mechanics and Foundation Engineering, Rotterdam, The Netherlands, pp. 103–107.
Karstunen, M., and Koskinen, M. (2008). “Plastic anisotropy of soft reconstituted clays.” Can. Geotech. J., 45(3), 314–328.
Karstunen, M., Krenn, H., Wheeler, S. J., Koskinen, M., and Zentar, R. (2005). “The effect of anisotropy and destructuration on the behaviour of Murro test embankment.” Int. J. Geomech., 5(2), 87–97.
Karstunen, M., and Yin, Z.-Y. (2010). “Modelling time-dependent behaviour of Murro test embankment.” Géotechnique, 60(10), 735–749.
Katona, M. G. (1984). “Evaluation of viscoplastic cap model.” J. Geotech. Eng., 110(8), 1106–1125.
Kimoto, S., and Oka, F. (2005). “An elasto-viscoplastic model for clay considering destructuralization and consolidation analysis of unstable behaviour.” Soils Found., 45(2), 29–42.
Kutter, B. L., and Sathialingam, N. (1992). “Elastic-viscoplastic modelling of the rate-dependent behaviour of clays.” Géotechnique, 42(3), 427–441.
Leoni, M., Karstunen, M., and Vermeer, P. A. (2008). “Anisotropic creep model for soft soils.” Géotechnique, 58(3), 215–226.
Leroueil, S., Kabbaj, M., Tavenas, F., and Bouchard, R. (1985). “Stress-strain-strain-rate relation for the compressibility of sensitive natural clays.” Géotechnique, 35(2), 159–180.
Leroueil, S., and Vaughan, P. R. (1990). “The general and congruent effects of structure in natural soils and weak rocks.” Géotechnique, 40(3), 467–488.
Mesri, G., and Godlewski, P. M. (1977). “Time and stress-compressibility interrelationship.” J. Geotech. Engrg. Div., 103(5), 417–430.
Oka, F., Adachi, T., and Okano, Y. (1986). “Two-dimensional consolidation analysis using an elasto-viscoplastic constitutive equation.” Int. J. Numer. Anal. Methods Geomech., 10(1), 1–16.
Oka, F., Kodaka, T., and Kim, Y.-S. (2004). “A cyclic viscoelastic-viscoplastic constitutive model for clay and liquefaction analysis of multi-layered ground.” Int. J. Numer. Anal. Methods Geomech., 28(2), 131–179.
Perzyna, P. (1963). “The constitutive equations for work-hardening and rate sensitive plastic materials.” Proc. Vibration Problems, Warsaw, 4(3), 281–290.
Perzyna, P. (1966). “Fundamental problems in viscoplasticity.” Adv. Appl. Mech., 9, 243–377.
Rocchi, G., Fontana, M., and Da Prat, M. (2003). “Modelling of natural soft clay destruction processes using viscoplasticity theory.” Géotechnique, 53(8), 729–745.
Roscoe, K. H., and Burland, J. B. (1968). “On the generalized stress-strain behaviour of ‘wet’ clay.” Engineering plasticity, Cambridge University Press, Cambridge, UK, 553–609.
Sekiguchi, H. (1984). “Theory of undrained creep rupture of normally consolidated clay based on elasto-viscoplasticity.” Soils Found., 24(1), 129–147.
Sheng, D., Sloan, S. W., and Yu, H. S. (2000). “Aspects of finite element implementation of critical state models.” Comput. Mech., 26, 185–196.
Suklje, L. (1957). “The analysis of the consolidation process by the isotaches method.” Proc., 4th Int. Conf. on Soil Mechanics and Foundation Engineering (ICSMFE), Butterworths Scientific, London, 200–206.
Vermeer, P. A., and Neher, H. P. (1999). “A soft soil model that accounts for creep.” Proc., Plaxis Symposium “Beyond 2000 in Computational Geotechnics”, Balkema, Rotterdam, 249–262.
Watabe, Y., Udaka, K., and Morikawa, Y. (2008). “Strain rate effect on long-term consolidation of Osaka Bay clay.” Soils Found., 48(4), 495–509.
Wheeler, S. J., Näätänen, A., Karstunen, M., and Lojander, M. (2003). “An anisotropic elasto-plastic model for soft clays.” Can. Geotech. J., 40(2), 403–418.
Yin, J. H., Zhu, J. G., and Graham, J. (2002). “A new elastic viscoplastic model for time-dependent behaviour of normally and overconsolidated clays: Theory and verification.” Can. Geotech. J., 39(1), 157–173.
Yin, Z.-Y., and Hicher, P. Y. (2008). “Identifying parameters controlling soil delayed behaviour from laboratory and in situ pressuremeter testing.” Int. J. Numer. Anal. Methods Geomech., 32(12), 1515–1535.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 137 • Issue 11 • November 2011
Pages: 1103 - 1113
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Mar 6, 2010
Accepted: Feb 24, 2011
Published online: Mar 2, 2011
Published in print: Nov 1, 2011
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