Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Anisotropic creep model for soft soils

Leoni, Martino and Karstunen, Minna and Vermeer, Pieter and , University of Stuttgart and , University of Strathclyde and , EC MRTN-CT-2004–512120 (Funder) and , Academy of Finland Grant 210744 (Funder) (2008) Anisotropic creep model for soft soils. Geotechnique, 58 (3). pp. 215-226. ISSN 0016-8505

[img]
Preview
PDF (strathprints013489.pdf)
Download (403Kb) | Preview

    Abstract

    In this paper a new anisotropic model for time-dependent behaviour of soft soils is presented. The formulation is based on a previously developed isotropic creep model, assuming rotated Modified Cam Clay ellipses as contours of volumetric creep strain rates. A rotational hardening law is adopted to account for changes in anisotropy due to viscous strains. Although this will introduce some new soil parameters, they do not need calibration as they can be expressed as functions of basic soil parameters through simple analytical expressions. To start with, the one-dimensional response of the model is discussed, making it possible to explore how the model is capable of capturing key features of viscous soft soil behaviour. Subsequently, the three-dimensional generalisation of the model is presented, followed by comparison with experimental data, showing good agreement in both triaxial undrained compression and extension. In the authors' opinion, the simple formulation of the model makes it attractive for use in engineering practice.

    Item type: Article
    ID code: 13489
    Keywords: sedimentary rocks, clastic rocks, soils, compressibility, extension, compression, calibration, strain, anisotropy, strain rates, clay, soft soils, models, creep, Engineering (General). Civil engineering (General)
    Subjects: Technology > Engineering (General). Civil engineering (General)
    Department: Faculty of Engineering > Civil and Environmental Engineering
    Related URLs:
      Depositing user: Dr Minna Karstunen
      Date Deposited: 19 Nov 2009 10:28
      Last modified: 15 Nov 2012 19:00
      URI: http://strathprints.strath.ac.uk/id/eprint/13489

      Actions (login required)

      View Item

      Fulltext Downloads: