Evaluation of K0 in stiff clay by back-analysis of convergence measurements from unsupported cylindrical cavity. Acta Geotechnica
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10313447" target="_blank" >RIV/00216208:11310/15:10313447 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1007/s11440-015-0395-7" target="_blank" >http://dx.doi.org/10.1007/s11440-015-0395-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11440-015-0395-7" target="_blank" >10.1007/s11440-015-0395-7</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Evaluation of K0 in stiff clay by back-analysis of convergence measurements from unsupported cylindrical cavity. Acta Geotechnica
Popis výsledku v původním jazyce
The coefficient of earth pressure at rest K0 of fine-grained soils is often being estimated empirically from the overconsolidation ratio (OCR). The relationships adopted in this estimation, however, assume that K0 is caused by pure mechanical unloading and do not consider that a significant proportion of the apparent preconsolidation pressure may be caused by the effects of ageing, in particular by secondary compression. In this work, K0 of Brno Tegel, which is a clay of stiff to hard consistency (apparent vertical preconsolidation pressure of 1800 kPa, apparent OCR of 7), was estimated based on back-analysis of convergence measurements from unsupported cylindrical cavity. The values were subsequently verified by analysing a supported exploratory aditand a two-lane road tunnel. As the simulation results are primarily influenced by soil anisotropy, it was quantified in an experimental programme. The ratio of shear moduli aG was 1.45, the ratio of horizontal and vertical Young's moduli
Název v anglickém jazyce
Evaluation of K0 in stiff clay by back-analysis of convergence measurements from unsupported cylindrical cavity. Acta Geotechnica
Popis výsledku anglicky
The coefficient of earth pressure at rest K0 of fine-grained soils is often being estimated empirically from the overconsolidation ratio (OCR). The relationships adopted in this estimation, however, assume that K0 is caused by pure mechanical unloading and do not consider that a significant proportion of the apparent preconsolidation pressure may be caused by the effects of ageing, in particular by secondary compression. In this work, K0 of Brno Tegel, which is a clay of stiff to hard consistency (apparent vertical preconsolidation pressure of 1800 kPa, apparent OCR of 7), was estimated based on back-analysis of convergence measurements from unsupported cylindrical cavity. The values were subsequently verified by analysing a supported exploratory aditand a two-lane road tunnel. As the simulation results are primarily influenced by soil anisotropy, it was quantified in an experimental programme. The ratio of shear moduli aG was 1.45, the ratio of horizontal and vertical Young's moduli
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
JM - Inženýrské stavitelství
OECD FORD obor
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Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2015
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Acta Geotechnica
ISSN
1861-1125
e-ISSN
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Svazek periodika
2015
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
15
Strana od-do
719-733
Kód UT WoS článku
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EID výsledku v databázi Scopus
2-s2.0-84947486066