The strength reduction method in clay hypoplasticity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10415789" target="_blank" >RIV/00216208:11310/20:10415789 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TN2n7zmD-H" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TN2n7zmD-H</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.compgeo.2020.103687" target="_blank" >10.1016/j.compgeo.2020.103687</a>

Result language
angličtina
Original language name
The strength reduction method in clay hypoplasticity
Original language description
An evaluation of slope stability using the finite element method is often performed as a complementary analysis to the plastic deformation analysis. The slope stability is typically evaluated by the reduction of the strength parameters c and phi of the Mohr-Coulomb model and it is represented by the so-called factor of safety. It is much less common to use the strength reduction method in combination with more advanced constitutive models and, for some modelling frameworks, it has actually not yet been developed. This leads to the need for advanced model substittion by the Mohr-Coulomb model and a further recalibration of the constitutive model parameters. In this paper, a new strength reduction method was developed for the models based on hypoplasticity, in particular to the hypoplastic model for clays. In addition to a simple reduction of the strength variables, a subsequent return of the deviatoric stress to the asymptotic state boundary surface is implemented so that all the integration points remain within the so-called asymptotic state boundary surface. Predictions using the newly developed method are thoroughly tested from the quantitative as well as qualitative point of view and compared with the predictions obtained from the Mohr-Coulomb model.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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