Simulations of a NATM tunnel in a stiff clay using hypoplastic model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10081100" target="_blank" >RIV/00216208:11310/10:10081100 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Simulations of a NATM tunnel in a stiff clay using hypoplastic model
Original language description
The paper presents 2D and 3D analyses of an exploratory adit and 3D analyses of a NATM tunnel in stiff clays using two constitutive models (hypoplastic model for clays and Mohr-Coulomb model). The convergence-confinement method CCM with stress-release parameter lambda was used in 2D simulations of the adit. To ensure that the 2D and 3D analyses give the same displacement field the parameter lambda had been optimised. The constitutive model parameters were subsequently optimised using monitoring data from the adit. Parameters of the hypoplastic model did not change substantially. The Mohr-Coulomb model gives correct predictions only for unrealistic model parameters and low K0 values. The 3D model of the tunnel with optimised parameters was set togetherand resulting simulations compared with actual monitoring data. In a case of hypoplastic model a good agreement was found.
Czech name
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Czech description
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Project
<a href="/en/project/GA205%2F08%2F0732" target="_blank" >GA205/08/0732: The development and evaluation of numerical methods for prediction of the behaviour of tunnels in fine-grained soils</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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