Back-analysis of K0 in overconsolidated clay on the basis of convergence measurements of a circular cavity
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10317107" target="_blank" >RIV/00216208:11310/14:10317107 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Back-analysis of K0 in overconsolidated clay on the basis of convergence measurements of a circular cavity
Popis výsledku v původním jazyce
In the poster, we present an investigation of the earth pressure coefficient at rest K0 by means of back-analysis of deformation measurements in underground cavity constructed in overconsolidated Brno clay. The model has been setup within Plaxis 3D software. To represent the clay behaviour, we utilized recently developed hypoplastic model with small strain stiffness anisotropy. Soil anisotropy was shown to influence the back-analysis results significantly. We also demonstrated, that backanalysed K0 is also influenced significantly by the neighboring exploratory gallery. The analyses indicated K0 = 0.81 in the depth of 23 m. To verify the results, this value was subsequently used as initial condition in numerical 3D analysis of Královo Pole tunnel. Themeasurements of horizontal deformation by inclinometer and surface settlement trough agree well with the results obtained from the back-analysis.
Název v anglickém jazyce
Back-analysis of K0 in overconsolidated clay on the basis of convergence measurements of a circular cavity
Popis výsledku anglicky
In the poster, we present an investigation of the earth pressure coefficient at rest K0 by means of back-analysis of deformation measurements in underground cavity constructed in overconsolidated Brno clay. The model has been setup within Plaxis 3D software. To represent the clay behaviour, we utilized recently developed hypoplastic model with small strain stiffness anisotropy. Soil anisotropy was shown to influence the back-analysis results significantly. We also demonstrated, that backanalysed K0 is also influenced significantly by the neighboring exploratory gallery. The analyses indicated K0 = 0.81 in the depth of 23 m. To verify the results, this value was subsequently used as initial condition in numerical 3D analysis of Královo Pole tunnel. Themeasurements of horizontal deformation by inclinometer and surface settlement trough agree well with the results obtained from the back-analysis.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
BJ - Termodynamika
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GAP105%2F12%2F1705" target="_blank" >GAP105/12/1705: Vývoj pokročilých numerických metod pro geomateriály</a><br>
Návaznosti
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů