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