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Critical state constitutive model for overconsolidated clays - HASP model

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2018
bitstream_11040.pdf (310.6Kb)
Authors
Jocković, Sanja
Vukićević, Mirjana
Conference object (Published version)
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Abstract
The paper presents a simple critical state bounding surface constitutive model for describing the mechanical behaviour of overconsolidated clays. Keeping the simplicity and the same set of the parameters as Modified Cam Clay model, new model provides a more realistic description of numerous elements of clay behaviour. The novel form of the hardening rule was proposed with the state parameter and the degree of overconsolidation as the state variables. Expressing the hardening parameter through the state parameter of the stress point on a loading surface and the state parameter of a conjugate stress point on the bounding surface, strain hardening and strain softening in drained conditions, as well as negative pore pressure in undrained conditions are well described. Inner loading surface always passes through the current stress point, thus enabling elasto-plastic soil behaviour even in early stages of loading. The model overcomes many deficiencies of the Modified Cam Clay model as demo...nstrated on a broad experimental evidence.

Keywords:
Constitutive model, overconsolidated clays, state parameter
Source:
Proceedings of the 16th Danube - European Conference on Geotechnical Engineering, 2018, 2
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_grafar_2896
URI
https://grafar.grf.bg.ac.rs/handle/123456789/2896
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за грађевинску геотехнику
Institution/Community
GraFar
TY  - CONF
AU  - Jocković, Sanja
AU  - Vukićević, Mirjana
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2896
AB  - The paper presents a simple critical state bounding surface constitutive model for describing the
mechanical behaviour of overconsolidated clays. Keeping the simplicity and the same set of the parameters as Modified Cam Clay model, new model provides a more realistic description of numerous elements of clay behaviour. The novel form of the hardening rule was proposed with the state parameter and the degree of overconsolidation as the state variables. Expressing the hardening parameter through the state parameter of the stress point on a loading surface and the state parameter of a conjugate stress point on the bounding surface, strain hardening and strain softening in drained conditions, as well as negative pore pressure in undrained conditions are well described. Inner loading surface always passes through the current stress point, thus enabling
elasto-plastic soil behaviour even in early stages of loading. The model overcomes many deficiencies of the Modified Cam Clay model as demonstrated on a broad experimental evidence.
C3  - Proceedings of the 16th Danube - European Conference on Geotechnical Engineering
T1  - Critical state constitutive model for overconsolidated clays - HASP model
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2896
ER  - 
@conference{
author = "Jocković, Sanja and Vukićević, Mirjana",
year = "2018",
abstract = "The paper presents a simple critical state bounding surface constitutive model for describing the
mechanical behaviour of overconsolidated clays. Keeping the simplicity and the same set of the parameters as Modified Cam Clay model, new model provides a more realistic description of numerous elements of clay behaviour. The novel form of the hardening rule was proposed with the state parameter and the degree of overconsolidation as the state variables. Expressing the hardening parameter through the state parameter of the stress point on a loading surface and the state parameter of a conjugate stress point on the bounding surface, strain hardening and strain softening in drained conditions, as well as negative pore pressure in undrained conditions are well described. Inner loading surface always passes through the current stress point, thus enabling
elasto-plastic soil behaviour even in early stages of loading. The model overcomes many deficiencies of the Modified Cam Clay model as demonstrated on a broad experimental evidence.",
journal = "Proceedings of the 16th Danube - European Conference on Geotechnical Engineering",
title = "Critical state constitutive model for overconsolidated clays - HASP model",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2896"
}
Jocković, S.,& Vukićević, M.. (2018). Critical state constitutive model for overconsolidated clays - HASP model. in Proceedings of the 16th Danube - European Conference on Geotechnical Engineering, 2.
https://hdl.handle.net/21.15107/rcub_grafar_2896
Jocković S, Vukićević M. Critical state constitutive model for overconsolidated clays - HASP model. in Proceedings of the 16th Danube - European Conference on Geotechnical Engineering. 2018;2.
https://hdl.handle.net/21.15107/rcub_grafar_2896 .
Jocković, Sanja, Vukićević, Mirjana, "Critical state constitutive model for overconsolidated clays - HASP model" in Proceedings of the 16th Danube - European Conference on Geotechnical Engineering, 2 (2018),
https://hdl.handle.net/21.15107/rcub_grafar_2896 .

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