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

Modeling time-dependent behavior of soft sensitive clay

Yin, Zhen-Yu and Karstunen, Minna and Chang, Ching S. and Koskinen, Mirva and Lojander, Matti (2011) Modeling time-dependent behavior of soft sensitive clay. Journal of geotechnical and geoenvironmental engineering, 137 (11). pp. 1103-1113. ISSN 1090-0241

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

The paper focuses on investigating the destructuration process during time-dependent stress-strain evolution. For this purpose, various oedometer tests and triaxial tests on intact and reconstituted samples of soft sensitive Vanttila clay were carried out. Based on experimental observations, a new elastic viscoplastic model, extended from the overstress theory of Perzyna, is developed. The proposed model accounts for inherent and induced anisotropy, interparticle bonds and bond degradation, and viscosity. The determination of model parameters is discussed, demonstrating how all model parameters can be determined in a straightforward way and no additional test is needed for the proposed model compared to the modified Cam clay model. The model is implemented into a finite-element code, which enables coupled consolidation analyses. The model is used to simulate various strain-rate and creep tests under one-dimensional and triaxial conditions on the intact samples of Vanttila clay. The comparisons between experimental results and simulations show that the model has good predictive ability on the time-dependent behavior of a soft sensitive clay.

Item type: Article
ID code: 40012
Keywords: creep, clays, time dependant, anisotropy, viscoplasticity, Engineering (General). Civil engineering (General), Geotechnical Engineering and Engineering Geology, Environmental Science(all)
Subjects: Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 13 Jun 2012 11:15
Last modified: 27 Mar 2014 10:10
URI: http://strathprints.strath.ac.uk/id/eprint/40012

Actions (login required)

View Item