Abstract
The influence of different features of natural soft clays, namely anisotropy, destructuration and viscosity, on modelling the time-dependent behaviour of Murro embankment was investigated. The newly developed elasto-viscoplastic models were enhanced for determining viscosity parameters in a straightforward way and adopted for the finite element analysis. The same set of common parameters determined from conventional triaxial and oedometer tests was employed for all models, with additional parameters required for representing different soil features. The finite element predictions by using models coupled with BIOT’s consolidation theory were compared with each other and with field data for settlement, horizontal displacement and excess pore pressures. In addition, the stress paths under the embankment loading were also compared with each other to improve the understanding of the effect of different soil features. All simulations demonstrate that all three features significantly influence the predictions. As a consequence, accounting for soil features needs to be carefully considered when they are applied to a construction site.
Similar content being viewed by others
References
KARSTUNEN M, KRENN H, WHEELER S J, KOSKINEN M, ZENTAR R. The effect of anisotropy and destructuration on the behaviour of Murro test embankment [J]. ASCE International Journal of Geomechanics, 2005, 5(2): 87–97.
KARSTUNEN M, WILTAFSKY C, KRENN H, SCHARINGER F, SCHWEIGER H F. Modelling the behaviour of an embankment on soft clay with different constitutive models [J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2006, 30(10): 953–982.
HINCHBERGER S D, ROWE R K. Evaluation of the predictive ability of two elastic-viscoplastic constitutive models [J]. Canadian Geotechnical Journal, 2005, 42(6): 1675–1694.
KELLN C, SHARMA J, HUGHES D, GRAHAM J. Finite element analysis of an embankment on a soft estuarine deposit using an elastic-viscoplastic soil model [J]. Canadian Geotechnical Journal, 2009, 46: 357–368.
XU Li-sheng, LI Jian-zhong. Viscous property of dried clay [J]. Journal of Central South University of Technology, 2006, 13(2): 204–208.
KONG Gang-qiang, YANG Qing, ZHENG Peng-yi, LUAN Mao-tian. Evaluation of group effect of pile group under dragload embedded in clay [J]. Journal of Central South University of Technology, 2009, 16(3): 503–512.
KARSTUNEN M, YIN Z-Y. Modelling time-dependent behaviour of Murro test embankment [J]. Géotechnique, 2010, 60(10): 735–749.
YIN Z-Y, KARSTUNEN M. Influence of anisotropy, destructuration and viscosity on the behaviour of an embankment on soft clay [C]// The 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG). Goa, India, 2008: 4728–4735.
YIN Z-Y, HICHER P Y. Identifying parameters controlling soil delayed behaviour from laboratory and in situ pressuremeter testing [J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2008, 32(12): 1515–1535.
WHEELER S J, NÄÄTÄNEN A, KARSTUNEN M, LOJANDER M. An anisotropic elasto-plastic model for soft clays [J]. Canadian Geotechnical Journal, 2003, 40: 403–418.
PERZYNA P. The constitutive equations for work-hardening and rate sensitive plastic materials [J]. Proceedings of Vibration Problems Warsaw, 1963: 281–290.
PERZYNA P. Fundamental problems in viscoplasticity [J]. Adv Appl Mech, 1966, 9: 244–377.
ROSCOE K H, BURLAND J B. On the generalized stress-strain behaviour of ‘wet’ clay. Engineering Plasticity [M]. Cambridge: Cambridge University Press, 1968: 553–609.
LEONI M, KARSTUNEN M, VERMEER P A. Anisotropic creep model for soft soils [J]. Géotechnique, 2008, 58(3): 215–226.
YIN Z-Y, CHANG C S, KARSTUNEN M, HICHER P Y. An anisotropic elastic viscoplastic model for soft soils [J]. International Journal of Solids and Structures, 2010, 47(5): 665–677.
VERMEER P A, STOLLE D F A, BONNIER P G. From the Classical Theory of Secondary Compression to Modern Creep Analysis [C]// Proceedings of the 9th International Conference on Computer Methods and Advances in Geomechanics. Wuhan/China, Vol.4. Rotterdam: Balkema, 1997: 2469–2478.
KOSKINEN M, KARSTUNEN M. Numerical modelling of Murro test embankment with S-CLAY1S [C]// Proc 6th European Conf Num Meth in Geotech Eng (NUMGE), Graz, Austria, 2006: 455–461.
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Project(11PJ1405700) supported by Pujiang Talent Plan of Shanghai, China; Project(41002091) supported by the National Natural Science Foundation of China; Project(PIAP-GA-2009-230638) supported by the European Community through the Program “People”
Rights and permissions
About this article
Cite this article
Yin, Zy., Karstunen, M., Wang, Jh. et al. Influence of features of natural soft clay on behaviour of embankment. J. Cent. South Univ. Technol. 18, 1667–1676 (2011). https://doi.org/10.1007/s11771-011-0887-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-011-0887-z