Affiliation:
1. Computing Center for Geotechnical Engineering Engineering Research Center of Urban Underground Space Development of Zhejiang Province, Department of Civil Engineering Zhejiang University Hangzhou China
2. Zhejiang Provincial Engineering Research Center for Digital & Smart Maintenance of Highway Hangzhou China
Abstract
AbstractA shear‐transformation‐zone (STZ) model is proposed for time‐dependent behaviours of clay, in which the viscoplastic deformation is described by the evolution of a temperature‐like state variable. The model is featured by rate‐dependent dilatancy and a unique critical state stress ratio. In its present form, it has nine parameters, most of which can be handily calibrated, and can predict the rate‐dependent undrained shear strength, primary, and secondary creep, as well as stress relaxation for normally consolidated clay under complex stress paths using a single set of parameters. The capabilities of the model have been verified by available experimental results on five different clays.
Funder
National Key Research and Development Program of China
Key Research and Development Program of Zhejiang Province
Fundamental Research Funds for the Central Universities