Evaluation of hypoplastic model for soft clays by modelling of Nicoll highway case history
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10433365" target="_blank" >RIV/00216208:11310/21:10433365 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_sK-DPwonI" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_sK-DPwonI</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.compgeo.2021.104053" target="_blank" >10.1016/j.compgeo.2021.104053</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of hypoplastic model for soft clays by modelling of Nicoll highway case history
Original language description
The paper presents evaluation of the newly proposed hypoplastic model for soft clays by modelling of the welldocumented geotechnical failure of a deep excavation of Nicoll Highway, Singapore, in 2004. The marine clays present at the site are typical normally consolidated soft clays, exhibiting large deformability and stiffness and strength anisotropy. These features - anisotropy of asymptotic state boundary surface and the effect of normal consolidation on stress paths and stiffness anisotropy - have been included into the newly proposed hypoplastic model. In the paper, it is first demonstrated that the model predictions compare well with experimental data from element tests on Singapore clay and improve predictions over original hypoplastic model. Secondly, numerical simulations of Nicoll highway excavation focusing on specific cross-section within the collapse area are presented, showing good fit between inclinometer data and simulations up to the final stages immediately preceding the excavation collapse. The simulation results are compared for previous version of the hypoplastic model, along with Mohr-Coulomb model with effective and total stress parameters. Subsequently, the influence of the model parameters on simulation results is studied and it is shown that the parameters affecting extension strength are more significant than parameters affecting pre-failure non-linearity.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/LTACH19028" target="_blank" >LTACH19028: Failure mechanism and hazard mitigation of wind turbine structure subjected to extreme environmental loadings</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Computers and Geotechnics
ISSN
0266-352X
e-ISSN
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Volume of the periodical
134
Issue of the periodical within the volume
June
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
104053
UT code for WoS article
000687255700006
EID of the result in the Scopus database
2-s2.0-85102082885