Original title: VLIV KONSTITUČNÍHO MODELU NA PREDIKCE DEFORMACÍ OKOLO TUNELU V JEMNOZRNNÝCH ZEMNÁCH
Translated title: The influence of a constitutive assumption on the predictions of deformations around a tunnel in fine-grained soils
Authors: Mašín, David ; Herle, Ivo
Document type: Papers
Conference/Event: Zakládání staveb, Brno (CZ), 2005-11-07 / 2005-11-08
Year: 2005
Language: cze
Abstract: [cze] [eng]
Článek prezentuje výsledky MKP analýz tunelu v jemnozrnných zeminách. Jsou porovnávány predikce pomocí různých konstitučních modelů, konkrétně modelu hypoplastického, Mohr-Coulombova a modelu Cam clay. The paper presents results of FE simulations of a tunnel in stiff fine-grained soils. Constitutive models of different complexity, namely Mohr-Coulomb model, Cam clay model and a hypoplastic model for clays, were calibrated only on the basis of standard laboratory experiments on London clay. Mohr-Coulomb and Cam clay models yield unrealistic results, whereas the hypoplastic model predicts deformations in a good agreement with measurements, due to its ability to predict non-linear pre-failure soil behaviour.
Keywords: constitutive model; non-linearity; tunnel
Project no.: CEZ:AV0Z20710524 (CEP)
Host item entry: Zakládáni staveb, ISBN 80-7204-413-3

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0116962

Permalink: http://www.nusl.cz/ntk/nusl-32937


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Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers