Influence of anisotropy, destructuration and viscosity on the behavior of an embankment on soft clay

Z. Y. Yin, M. Karstunen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

14 Citations (Scopus)

Abstract

The paper aims to investigate the influence of different features of natural clays, namely anisotropy, destructuration and viscosity, on modeling the delayed behavior of a benchmark embankment on soft clay. The elasto-viscoplastic models, which are based on elasto-plastic models (Modified Cam Clay, S-CLAY1 and S-CLAY1S) and Perzyna's overstress theory are coupled with Biot's consolidation theory. The parameters for the models can be determined from the same set of triaxial and oedometer tests. The same set of common soil constants and state parameters is employed for all models, with additional parameters required for representing different soil features. The finite element predictions compare the results for settlement, horizontal displacement and excess pore pressure during the construction and the subsequent consolidation for all models. In addition, the stress paths under the embankment loading are also compared each other to improve the understanding of the effect of different soil features. All simulations demonstrate that all three features influence significantly the predictions. As a consequence, accounting for soil features need to be carefully considered when applied to real construction sites.

Original languageEnglish
Title of host publication12th International Conference on Computer Methods and Advances in Geomechanics 2008
Pages4728-4735
Number of pages8
Publication statusPublished - 1 Dec 2008
Externally publishedYes
Event12th International Conference on Computer Methods and Advances in Geomechanics 2008 - Goa, India
Duration: 1 Oct 20086 Oct 2008

Publication series

Name12th International Conference on Computer Methods and Advances in Geomechanics 2008
Volume6

Conference

Conference12th International Conference on Computer Methods and Advances in Geomechanics 2008
CountryIndia
CityGoa
Period1/10/086/10/08

Keywords

  • Anisotropy
  • Destructuration
  • Embankment
  • Soft clay
  • Viscosity

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Applied Mathematics

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