Journal
GEOTECHNIQUE
Volume -, Issue -, Pages -Publisher
ICE PUBLISHING
DOI: 10.1680/jgeot.21.00245
Keywords
clays; constitutive relations; creep; critical state; rate dependence; thermodynamics; time dependence
Categories
Funding
- Research Council of Norway through its Centres of Excellence Funding Scheme, PoreLab [262644]
Ask authors/readers for more resources
In this study, a thermodynamically based hyperplasticity framework was used to develop a hyper-viscoplastic constitutive model for describing clay's creep and rate-dependent behavior. The model complies with the concept of isotache viscosity and the paradigm of critical state soil mechanics.
The thermodynamically based hyperplasticity framework is employed to develop a hyper-viscoplastic constitutive model describing clay's creep and rate-dependent behaviour. The proposed model complies with the concept of the isotache viscosity and the paradigm of the critical state soil mechanics that is the uniqueness of the critical state friction envelope. A versatile force potential or dissipation rate function is presented that provides adjustability of the location of the critical state while securing a unique critical state friction envelope. A non-associated flow rule as an essential property of frictional material is adopted by further development of the force potential. Adequacy of the proposed constitutive model is evaluated through the simulation of the triaxial tests conducted on Hong Kong marine deposits.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available