NEW ADVANCED MATERIAL MODEL FOR NUMERICAL MODELLING OF SHALLOW TUNNELS IN SOFT CLAYS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00231122" target="_blank" >RIV/68407700:21110/15:00231122 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sgem.org/sgemlib/spip.php?article5392" target="_blank" >http://www.sgem.org/sgemlib/spip.php?article5392</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/SGEM2015/B12/S2.063" target="_blank" >10.5593/SGEM2015/B12/S2.063</a>

Jazyk výsledku

angličtina

Název v původním jazyce

NEW ADVANCED MATERIAL MODEL FOR NUMERICAL MODELLING OF SHALLOW TUNNELS IN SOFT CLAYS

Popis výsledku v původním jazyce

This paper describes a newly developed advanced material model which can better simulate the real behaviour of the soil mass during the tunnel excavation and contains the following main features. Firstly, the model is based on the rounded Mohr-Coulomb (William-Warnke) failure yield criterion which eliminates the singular tips from the Mohr-Coulomb surface and has better agreement with the data from the experimental tests. Secondly, the model has the possibility to simulate the non-linear isotropic hardening and softening of the soils. Thirdly, it is capable to increase the stiffness modulus with increasing depth or stress level and finally the model has the ability to simulate the non-linear decrease of the stiffness modulus in a small strain range (0.0001 ? 0.1%). The combination of these improvements caused that the width and the shape of the settlement troughs are more accurately modelled, the excavation heave is reduced to more realistic values and the results of the soil mass beha

Název v anglickém jazyce

NEW ADVANCED MATERIAL MODEL FOR NUMERICAL MODELLING OF SHALLOW TUNNELS IN SOFT CLAYS

Popis výsledku anglicky

This paper describes a newly developed advanced material model which can better simulate the real behaviour of the soil mass during the tunnel excavation and contains the following main features. Firstly, the model is based on the rounded Mohr-Coulomb (William-Warnke) failure yield criterion which eliminates the singular tips from the Mohr-Coulomb surface and has better agreement with the data from the experimental tests. Secondly, the model has the possibility to simulate the non-linear isotropic hardening and softening of the soils. Thirdly, it is capable to increase the stiffness modulus with increasing depth or stress level and finally the model has the ability to simulate the non-linear decrease of the stiffness modulus in a small strain range (0.0001 ? 0.1%). The combination of these improvements caused that the width and the shape of the settlement troughs are more accurately modelled, the excavation heave is reduced to more realistic values and the results of the soil mass beha

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

15th INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE SGEM 2015

ISBN

978-619-7105-32-2

ISSN

1314-2704

e-ISSN

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Počet stran výsledku

8

Strana od-do

471-478

Název nakladatele

Academy of Sciences

Místo vydání

Varna

Místo konání akce

Albena

Datum konání akce

18. 6. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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