A Binary-Medium Constitutive Model for Artificially Structured Soils Based on the Disturbed State Concept and Homogenization Theory
Publication: International Journal of Geomechanics
Volume 17, Issue 7
Abstract
Triaxial compression tests were carried out on artificially structured soil samples at confining pressures of 25, 37.5, 50, 100, 200, and 400 kPa. A binary-medium constitutive model for artificially structured soils is proposed based on the experimental results, the disturbed state concept (DSC), and homogenization theory. A new constitutive model for artificially structured soils was formulated by regarding the structured soils as a binary medium consisting of bonded blocks and weakened bands. The bonded blocks are idealized as bonded elements whose deformation properties are described by elastic materials, and the weakened bands are idealized as frictional elements whose deformation properties are described by the Lade-Duncan model. By introducing the structural parameters of breakage ratio and local strain coefficient, the nonuniform distribution of stress and strain within a representative volume element can be given based on the homogenization theory of heterogeneous materials. The methods for determination of the model parameters are given on the basis of experimental results. Comparisons of predictions with experimental data demonstrate that the new model provides satisfactory qualitative and quantitative modeling of many important features of artificially structured soils.
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Acknowledgments
The authors thank the reviewers and editor for their comments and appreciate the financial support from the National Natural Science Foundation of China (NSFC) (Grants 51009103 and 51579167).
References
Asaoka, A., Nakano, M., and Noda, T. (2001). “The decay of structure and the loss of overconsolidation.” Proc., 15th Int. Conf. on Soil Mechanics and Geotechnical Engineering, CRC, Boca Raton, FL, 19–22.
Baracos, A., Graham, J., and Domaschuk, L. (1980). “Yielding and rupture in a Lacustrine clay.” Can. Geotech. J., 17(4), 553–559.
Baudet, B., and Stallebrass, S. (2004). “A constitutive model for structured clays.” Géotechnique, 54(4), 269–278.
Belokas, G., and Kavvadas, M. (2010). “An anisotropic model for structured soils.” Comput. Geotech., 37(6), 737–747.
Bressani, L. A. (1990). “Experimental properties of bonded soils.” Ph.D. thesis, Univ. of London, London.
Burland, J. B. (1990). “On the compressibility and shear strength of natural clays.” Géotechnique, 40(3), 329–378.
Callisto, L., and Calabresi, G. (1998). “Mechanical behaviour of a natural soft clay.” Géotechnique, 48(4), 495–513.
Callisto, L., Gajo, A., and Wood, D. M. (2002). “Simulation of triaxial and true triaxial tests on natural and reconstituted Pisa clay.” Géotechnique, 52(9), 649–666.
Cotecchia, F., and Chandler, R. J. (2000). “A general framework for the mechanical behaviour of clays.” Géotechnique, 50(4), 431–447.
Desai, C. S. (1974). “A consistent finite element technique for work-softening behavior.” Proc., Int. Conf. on Computational Methods in Nonlinear Mechanics, J. T. Oden et al. eds., Univ. of Texas, Austin, TX, 969–978.
Desai, C. S. (2001). Mechanics of materials and interfaces: The disturbed state concept, CRC, Boca Raton, FL.
Diaz-Rodrìguez, J. A., Leroueil, S., and Alemàn, J. D. (1992). “Yielding of Mexico City clay and other natural clays.” J. Geotech. Eng., 981–995.
Dudoignon, P., Pantet, A., Carra, L., and Velde, B. (2001). “Macro-micro measurement of particle arrangement in sheared kaolinitic matrices.” Géotechnique, 51(6), 493–499.
Gajo, A., and Wood, D. M. (2001). “A new approach to anisotropic, bounding surface plasticity: General formulation and simulations of natural and reconstituted clay behaviour.” Int. J. Numer. Anal. Methods Geomech., 25(3), 207–241.
Gao, Z., and Zhao, J. (2012). “Constitutive modeling of artificially cemented sand by considering fabric anisotropy.” Comput. Geotech., 41, 57–69.
Graham, J., and Houlsby, G. T. (1983). “Anisotropic elasticity of a natural clay.” Géotechnique, 33(2), 165–180.
Huang, M., Liu, Y., and Sheng, D. (2011). “Simulation of yielding and stress–stain behavior of shanghai soft clay.” Comput. Geotech., 38(3), 341–353.
Kavvadas, M., and Amorosi, A. (2000). “A constitutive model for structured soils.” Géotechnique, 50(3), 263–273.
Krajcinovic, D., and Mastilovic, S. (1995). “Some fundamental issues of damage mechanics.” Mech. Mater., 21(3), 217–230.
Lade, P. V. (1977). “Elasto-plastic stress-strain theory for cohesionless soil with curved yield surfaces.” Int. J. Solids Struct., 13(11), 1019–1035.
Lade, P. V., and Duncan, J. M. (1975). “Elasto-plastic stress-strain theory for cohesionless soil.” J. Geotech. Engrg. Div., 101(10), 1037–1053.
Lambe, T. W. (1960). “A mechanical picture of shear strength in clay.” Research Conf. on Shear Strength of Cohesive Soils. Univ. of Colorado, Boulder, CO, 555–580.
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.
Liu, M. D., and Carter, J. P. (2002). “A structured Cam-clay model.” Can. Geotech. J., 39(6), 1313–1332.
Liu, M. D., Carter, J. P., and Airey, D. W. (2011). “Sydney soil model: (I) Theoretical formulation.” Int. J. Geomech., 211–224.
Liu, M. D., Carter, J. P., and Desai, C. S. (2003). “Modeling compression behavior of structured geomaterials.” Int. J. Geomech., 191–204.
Liu, M. D., Carter, J. P., Desai, C. S., and Xu, K. J. (2000). “Analysis of the compression of structured soils using the disturbed state concept.” Int. J. Numer. Anal. Methods Geomech., 24(8), 723–735.
Liu, W., Shi, M., Miao, L., Xu, L., and Zhang, D. (2013). “Constitutive modeling of the destructuration and anisotropy of natural soft clay.” Comput. Geotech., 51, 24–41.
Lo, K. Y., and Morin, J. P. (1972). “Strength anisotropy and time effects of two sensitive clays.” Can. Geotech. J., 9(3), 261–277.
Maccarini, M. (1987). “Laboratory studies of a weakly bonded artificial soil.” Ph.D. thesis, Univ. of London, London.
Malandraki, V., and Toll, D. G. (2001). “Triaxial tests on weakly bonded soil with changes in stress path.” J. Geotech. Geoenviron. Eng., 282–291.
Mitchell, J. K. (1976). Fundamentals of soil behavior, Wiley, New York.
Rocchi, G., Vaciago, G., Fontana, M., and Prat, M. D. (2013). “Understanding sampling disturbance and behaviour of structured clays through constitutive modelling.” Soils Found., 53(2), 315–334.
Rouainia, M., and Wood, D. M. (2000). “A kinematic hardening constitutive model for natural clays with loss of structure.” Géotechnique, 50(2), 153–164.
Sangrey, D. (1972). “On the causes of natural cementation in sensitive soils.” Can. Geotech. J., 9(1), 117–119.
Schmertmann, J. H. (1991). “The mechanical aging of soils.” J. Geotech. Eng., 1288–1330.
Schofield, A. N., and Worth, C. P. (1968). Critical state soil mechanics, McGraw-Hill, London.
Shen, Z. J. (1997). “Development of structural model for soils.” Proc., 9th Conf. on Computational Methods and Advance in Geomechics, A. A. Balkema, Rotterdam, Netherlands, 235–240.
Shen, Z. J. (2006). “Progress in binary medium modeling of geological materials.” Modern trends in geomechancis, Wu, W., and H. S Yu, eds., Springer, Berlin, 77–99.
Smith, P. R., Jardine, R. J., and Hight, D. W. (1992). “The yielding of Bothkennar clay.” Géotechnique, 42(2), 257–274.
Suebsuk, J., Horpibulsuk, S., and Liu, M. D. (2011). “A critical state model for overconsolidated structured clays.” Comput. Geotech., 38(5), 648–658.
Wang, J. G., Leung, C. F., and Ichikawa, Y. (2002). “A simplified homogenisation method for composite soils.” Comput. Geotech., 29(6), 477–500.
Wheeler, S. J., Näätänen, A., Karstunen, M., and Lojander, M. (2003). “An anisotropic elastoplastic model for soft clays.” Can. Geotech. J., 40(2), 403–418.
Yao, Y. P., Hou, W., and Zhou, A. N. (2009). “UH model: Three-dimensional unified hardening model for overconsolidated clays.” Géotechnique, 59(5), 451–469.
Yao, Y. P., Kong, L. M., Zhou, A. N., and Yin, J. H. (2015). “Time-dependent unified hardening model: Three-dimensional elasto-visco-plastic constitutive model for clays.” J. Eng. Mech., 04014162.
Yin, Z. Y., Chang, C. S., Hicher, P. Y., and Karstunen, M. (2009). “Micromechanical analysis of kinematic hardening in natural clay.” Int. J. Plast., 25(8), 1413–1435.
Yu, H. S. (2006). Plasticity and geotechnics, Springer, Berlin.
Zhao, X. H., Sun, H., and Lo, K. W. (2002). “An elastoplastic damage model of soil.” Géotechnique, 52(7), 533–536.
Zhu, E. Y., and Yao, Y. P. (2013). “A structured UH model.” Constitutive modelling of geomaterials, Yang, Q et al., eds., Springer, Berlin, 675–689.
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© 2016 American Society of Civil Engineers.
History
Received: Apr 18, 2016
Accepted: Oct 13, 2016
Published online: Dec 2, 2016
Discussion open until: May 2, 2017
Published in print: Jul 1, 2017
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