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Class A predictions of a NATM tunnel in stiff clay

Svoboda, T. / Mašín, D. / Boháč, J.

AbstractThe paper demonstrates the application of a hypoplastic model in class A predictions of a NATM tunnel in an urban environment. The tunnel, excavated in a stiff clay, is 14m wide with 6m to 21m of overburden thickness. The constitutive model was calibrated using laboratory data (oedometric and triaxial tests) and the parameters were optimised using monitoring data from an exploratory drift. Based on the optimised data set, the future tunnel was simulated. After the tunnel excavation, it could be concluded that the model predicted correctly surface settlements, surface horizontal displacements, and the distribution of vertical displacements with depth. It overpredicted horizontal displacements in the vicinity of the tunnel.

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Class A predictions of a NATM tunnel in stiff clay

Svoboda, T. / Mašín, D. / Boháč, J.

AbstractThe paper demonstrates the application of a hypoplastic model in class A predictions of a NATM tunnel in an urban environment. The tunnel, excavated in a stiff clay, is 14m wide with 6m to 21m of overburden thickness. The constitutive model was calibrated using laboratory data (oedometric and triaxial tests) and the parameters were optimised using monitoring data from an exploratory drift. Based on the optimised data set, the future tunnel was simulated. After the tunnel excavation, it could be concluded that the model predicted correctly surface settlements, surface horizontal displacements, and the distribution of vertical displacements with depth. It overpredicted horizontal displacements in the vicinity of the tunnel.

Class A predictions of a NATM tunnel in stiff clay

Svoboda, T. / Mašín, D. / Boháč, J.

AbstractThe paper demonstrates the application of a hypoplastic model in class A predictions of a NATM tunnel in an urban environment. The tunnel, excavated in a stiff clay, is 14m wide with 6m to 21m of overburden thickness. The constitutive model was calibrated using laboratory data (oedometric and triaxial tests) and the parameters were optimised using monitoring data from an exploratory drift. Based on the optimised data set, the future tunnel was simulated. After the tunnel excavation, it could be concluded that the model predicted correctly surface settlements, surface horizontal displacements, and the distribution of vertical displacements with depth. It overpredicted horizontal displacements in the vicinity of the tunnel.

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Titel:

Class A predictions of a NATM tunnel in stiff clay

Beteiligte:

Svoboda, T. (Autor:in) / Mašín, D. (Autor:in) / Boháč, J. (Autor:in)

Erschienen in:

Computers and Geotechnics ; 37 ; 817-825

Erscheinungsdatum:

03.07.2010

Format / Umfang:

9 pages

ISSN:

DOI:

https://doi.org/10.1016/j.compgeo.2010.07.003

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Nonlinear analysis , Tunnelling , Clays , Constitutive models , Three-dimensional analysis , Class A predictions

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