Modelling yielding of soft clays with multilaminate framework

R. Mahin Roosta; M. Karstunen; M. Koskinen

Modelling yielding of soft clays with multilaminate framework

R. Mahin Roosta, M. Karstunen, M. Koskinen

Research output: Book chapter/Published conference paper › Conference paper

Abstract

Soft clays found in situ are often K₀-consolidated. Due to this anisotropic consolidation history, the yield points identified from triaxial tests are not symmetric around the hydrostatic axis. In this paper the anisotropic consolidation of soft clay samples, with a wide range on friction angles, is simulated with a new constitutive model, called GUM, embedded in the multilaminate framework. The samples are subsequently reloaded along different stress paths in the p′-q-space, both in triaxial compression and triaxial extension. The global yield points predicted by the GUM model are compared with the yield surface predicted by the S-CLAY1 model and experimental data on reconstituted soft Finnish clays.

Original language	English
Title of host publication	Numerical Models in Geomechanics - 9th Proceedings of the International Symposium on Numerical Models in Geomechanics, NUMOG 2004
Editors	S. Pietruszczak, G.N. Pande
Publisher	CRC Press/Balkema
Pages	157-164
Number of pages	8
ISBN (Print)	9789058096364
Publication status	Published - 01 Jan 2004
Externally published	Yes
Event	9th International Symposium on Numerical Models in Geomechanics, NUMOG 2004 - Ottawa, Canada Duration: 25 Aug 2004 → 27 Aug 2004

Conference

Conference	9th International Symposium on Numerical Models in Geomechanics, NUMOG 2004
Country	Canada
City	Ottawa
Period	25/08/04 → 27/08/04

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title = "Modelling yielding of soft clays with multilaminate framework",

abstract = "Soft clays found in situ are often K0-consolidated. Due to this anisotropic consolidation history, the yield points identified from triaxial tests are not symmetric around the hydrostatic axis. In this paper the anisotropic consolidation of soft clay samples, with a wide range on friction angles, is simulated with a new constitutive model, called GUM, embedded in the multilaminate framework. The samples are subsequently reloaded along different stress paths in the p′-q-space, both in triaxial compression and triaxial extension. The global yield points predicted by the GUM model are compared with the yield surface predicted by the S-CLAY1 model and experimental data on reconstituted soft Finnish clays.",

author = "Roosta, {R. Mahin} and M. Karstunen and M. Koskinen",

year = "2004",

month = jan,

day = "1",

language = "English",

isbn = "9789058096364",

pages = "157--164",

editor = "S. Pietruszczak and G.N. Pande",

booktitle = "Numerical Models in Geomechanics - 9th Proceedings of the International Symposium on Numerical Models in Geomechanics, NUMOG 2004",

publisher = "CRC Press/Balkema",

note = "9th International Symposium on Numerical Models in Geomechanics, NUMOG 2004 ; Conference date: 25-08-2004 Through 27-08-2004",

}

Roosta, RM, Karstunen, M & Koskinen, M 2004, Modelling yielding of soft clays with multilaminate framework. in S Pietruszczak & GN Pande (eds), Numerical Models in Geomechanics - 9th Proceedings of the International Symposium on Numerical Models in Geomechanics, NUMOG 2004. CRC Press/Balkema, pp. 157-164, 9th International Symposium on Numerical Models in Geomechanics, NUMOG 2004, Ottawa, Canada, 25/08/04.

Modelling yielding of soft clays with multilaminate framework. / Roosta, R. Mahin; Karstunen, M.; Koskinen, M.

Numerical Models in Geomechanics - 9th Proceedings of the International Symposium on Numerical Models in Geomechanics, NUMOG 2004. ed. / S. Pietruszczak; G.N. Pande. CRC Press/Balkema, 2004. p. 157-164.

Research output: Book chapter/Published conference paper › Conference paper

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AB - Soft clays found in situ are often K0-consolidated. Due to this anisotropic consolidation history, the yield points identified from triaxial tests are not symmetric around the hydrostatic axis. In this paper the anisotropic consolidation of soft clay samples, with a wide range on friction angles, is simulated with a new constitutive model, called GUM, embedded in the multilaminate framework. The samples are subsequently reloaded along different stress paths in the p′-q-space, both in triaxial compression and triaxial extension. The global yield points predicted by the GUM model are compared with the yield surface predicted by the S-CLAY1 model and experimental data on reconstituted soft Finnish clays.

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