Optimisation of parameters for simulating a NATM tunnel in stiff clays based on a 3D model of exploratory adit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F09%3A10001120" target="_blank" >RIV/00216208:11310/09:10001120 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Optimisation of parameters for simulating a NATM tunnel in stiff clays based on a 3D model of exploratory adit
Original language description
The paper presents comparison of 2D and 3D analyses of an exploratory adit of a NATM tunnel in stiff clays using two constitutive models (hypoplastic model for clays and Mohr-Coulomb model). The stress-release factor ? of 2D simulation has been optimisedto ensure that the 2D and 3D analyses give the same displecement field. The value of the ? factor is, however, not unique to the given tunnel geometry, among other it dependends on the constitutive model and on the value of K0. The constitutive model parameters were subsequently optimised using monitoring data from the adit. Parameters of the hypoplastic model did not change substantially during the optimisation process, this model can therefore be used for predictions based on parameters calibrated solely on laboratory experimental data. The Mohr-Coulomb model gives correct predictions only for unrealistic model parameters and low K0 values.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
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
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
International Conference on Computational Methods in Tunnelling EURO:TUN 2009
ISBN
978-3-931681-93-7
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
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Publisher name
Ruhr University Bochum
Place of publication
Bochum
Event location
Bochum
Event date
Sep 9, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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