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Unified hardening (UH) model for clays and sands.
- Source :
-
Computers & Geotechnics . Jun2019, Vol. 110, p326-343. 18p. - Publication Year :
- 2019
-
Abstract
- Abstract A unified model for clays and sands, referred to as CSUH model, is proposed. The CSUH model develops the following aspects based on the unified hardening (UH) model: (a) a curved normal compression line in the e -ln p plane is proposed by introducing a parameter to describe the isotropic compression of sands; (b) a drop-shaped yield function, involving a critical state parameter, is adopted to get a better prediction of the shear yield and the critical state of sands; (c) a dilatancy parameter is introduced into the dilatancy equation to consider the density-dependent dilatancy of sands; and (d) different CSLs of sands with different lode's angles in the e - p plane are considered. The CSUH model can degrade into the UH model to describe the behaviors of overconsolidated clays and can further degrade into the modified Cam-clay model to simulate the behaviors of normally consolidated clays. Finally, comparisons with the test data indicate that, the CSUH model cannot only predict the stress-strain relations of both clays and sands in a wide range of overconsolidation ratios or densities and stresses, but also is capable of describing triaxial compression, triaxial extension and three-dimensional behavior. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SAND
*HUMAN behavior models
*CLAY
Subjects
Details
- Language :
- English
- ISSN :
- 0266352X
- Volume :
- 110
- Database :
- Academic Search Index
- Journal :
- Computers & Geotechnics
- Publication Type :
- Academic Journal
- Accession number :
- 135792935
- Full Text :
- https://doi.org/10.1016/j.compgeo.2019.02.024