For complex stress paths involving loading, unloading and subsequent reloading in an arbitrary direction, the soil stress-strain properties depend greatly on the loading history. A general analytical model is proposed which describes the anisotropic, elasto-plastic, path-dependent stress-strain properties of inviscid saturated clays under undrained loading conditions. The basic principles of the model are first presented along with a general interpretation of its main features and capabilities. Thereafter, the model predictions are compared with laboratory results from undrained triaxial and simple shear tests on clays. The model predicts significant changes in lateral stresses during simple shear tests, as has been observed experimentally. A method is proposed to evaluate the coefficient of effective lateral stress in simple shear samples at failure.
|Original language||English (US)|
|Number of pages||7|
|Journal||Nor Geotek Inst Publ|
|State||Published - Jan 1 1977|
All Science Journal Classification (ASJC) codes
- Water Science and Technology
- Geotechnical Engineering and Engineering Geology