Modelling of undrained shearing of soft natural clays
Paper in proceedings, 2019

stress-strain response of soft natural clays is characterised by anisotropy, destructuration and rate-dependency. An accurate constitutive description of these materials should take into consideration all of the characteristics above. In this paper, two constitutive models for soft soils, namely the SCLAY1S and Creep-SCLAY1S models are used to simulate the undrained response of two soft natural clays, Gothenburg clay from Sweden and Otaniemi clay from Finland. The SCLAY1S model accounts for the effect of inherent and induced anisotropy and destructuration, while the Creep-SCLAY1S accounts also for the creep and rate effects. The model simulations are compared against triaxial compression and extension tests on anisotropically consolidated samples. The results demonstrate the need to incorporate all features represented in the Creep-SCLAY1S model when modelling structured natural clays.

Author

Alexandros Petalas

Chalmers, Architecture and Civil Engineering, GeoEngineering

Mats Karlsson

Chalmers, Architecture and Civil Engineering, GeoEngineering

Minna Karstunen

Chalmers, Architecture and Civil Engineering, GeoEngineering

E3S Web of Conferences

25550403 (ISSN) 22671242 (eISSN)

Vol. 92 15001

7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
Glasgow, United Kingdom,

Effects of climate change on slope stability in sensitive clays

Formas, 2017-01-01 -- 2020-12-31.

Subject Categories

Applied Mechanics

Textile, Rubber and Polymeric Materials

Oceanography, Hydrology, Water Resources

DOI

10.1051/e3sconf/20199215001

More information

Latest update

11/11/2019