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Evaluation of the influence of scaling function on modelling time-dependent behaviour of natural clays

Yin, Zhen-Yu and Karstunen, Minna and Hicher, Pierre-Yves (2010) Evaluation of the influence of scaling function on modelling time-dependent behaviour of natural clays. Soils and foundations, 50 (2). pp. 203-214. ISSN 0038-0806

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Abstract

In this paper, we study the influence of the scaling functions in Perzyna's type elasto-viscoplastic models for predicting time-dependent behaviour of natural clays. The constitutive models were developed based on the overstress theory with different scaling functions and on the elastoplastic model S-CLAY1S which accounts for induced anisotropy and gradual degradation of apparent soil bonds. Laboratory tests were simulated on natural clays under one-dimensional and triaxial conditions to evaluate the scaling function influence in the modelling of the strain-rate effect on soil strength and creep effect. The influence of scaling functions on modelling the time-dependent behaviour under pressuremeter condition was also numerically examined. This test is treated as an example of a boundary value problem, which also allows us to see if this in situ testing is capable of deriving the parameters controlling the time-dependent behaviour.

Item type: Article
ID code: 29701
Keywords: anisotropy, clay, constitutive equation of soil, creep, sensitivity, time effect, Engineering (General). Civil engineering (General), Geotechnical Engineering and Engineering Geology, Civil and Structural Engineering
Subjects: Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 05 Apr 2011 10:34
Last modified: 27 Mar 2014 09:16
URI: http://strathprints.strath.ac.uk/id/eprint/29701

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