The strength reduction method in clay hypoplasticity

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

The strength reduction method in clay hypoplasticity

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The strength reduction method in clay hypoplasticity

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Computers and Geotechnics

ISSN

0266-352X

e-ISSN

—

Svazek periodika

126

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

103687

Kód UT WoS článku

000564619700002

EID výsledku v databázi Scopus

—