Comparison of displacement field predicted by 2D and 3D finite element modelling of shallow NATM tunnels in clays

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10107481" target="_blank" >RIV/00216208:11310/11:10107481 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/gete.201000009" target="_blank" >http://dx.doi.org/10.1002/gete.201000009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/gete.201000009" target="_blank" >10.1002/gete.201000009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of displacement field predicted by 2D and 3D finite element modelling of shallow NATM tunnels in clays

Popis výsledku v původním jazyce

The 2D load-reduction method for simulating NATM tunnels using plane strain finite elements is evaluated in the paper by comparison with fully 3D simulations. Three real shallow tunnels in urban environment in different stiff clays were simulated. The soil behaviour was described by an advanced non-linear soil constitutive model based on the hypoplasticity theory. Time-dependent behaviour of shotcrete lining was considered in 3D simulations, whereas constant final stiffness was used in the plane strainanalyses. The 2D analyses were thus controlled by a single parameter that accounts for 3D effects. It is shown that for an optimum value of this parameter, the displacement field predicted by the 2D method agrees well with the 3D simulations. In some cases only, a discrepancy was observed in the close vicinity of the tunnel. The controlling parameter was, however, found to be dependent on the problem simulated (for the same material) and also on the material properties (for the same tunn

Název v anglickém jazyce

Comparison of displacement field predicted by 2D and 3D finite element modelling of shallow NATM tunnels in clays

Popis výsledku anglicky

The 2D load-reduction method for simulating NATM tunnels using plane strain finite elements is evaluated in the paper by comparison with fully 3D simulations. Three real shallow tunnels in urban environment in different stiff clays were simulated. The soil behaviour was described by an advanced non-linear soil constitutive model based on the hypoplasticity theory. Time-dependent behaviour of shotcrete lining was considered in 3D simulations, whereas constant final stiffness was used in the plane strainanalyses. The 2D analyses were thus controlled by a single parameter that accounts for 3D effects. It is shown that for an optimum value of this parameter, the displacement field predicted by the 2D method agrees well with the 3D simulations. In some cases only, a discrepancy was observed in the close vicinity of the tunnel. The controlling parameter was, however, found to be dependent on the problem simulated (for the same material) and also on the material properties (for the same tunn

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

<a href="/cs/project/GAP105%2F11%2F1884" target="_blank" >GAP105/11/1884: Horizontální geostatické napětí v jílovém masivu a jeho užití v analýzách MKP</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Geotechnik

ISSN

0172-6145

e-ISSN

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Svazek periodika

34

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

115-126

Kód UT WoS článku

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EID výsledku v databázi Scopus

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