Hypoplastic and viscohypoplastic models for soft clays with strength anisotropy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10421186" target="_blank" >RIV/00216208:11310/20:10421186 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=05skz4Fgd-" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=05skz4Fgd-</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/nag.3068" target="_blank" >10.1002/nag.3068</a>
Alternative languages
Result language
angličtina
Original language name
Hypoplastic and viscohypoplastic models for soft clays with strength anisotropy
Original language description
This paper presents a new viscohypoplastic model for soft clays accounting for their typical features-strength anisotropy and rate dependency. The model is based on the hypoplastic model for clays enhanced by the anisotropic shape of the asymptotic state boundary surface. It has been shown that if the surface is skewed, the model predicts different ultimate strength in compression and in extension. Additional enhancement makes the tensor L bilinear in the strain rate, which more realistically predicts the stress paths of K-0 consolidated samples. The new model has been evaluated by simulating laboratory experiments on soft marine clays (Singapore and Bangkok clays). The model can be easily calibrated using only undrained triaxial and odometer tests. The model is subsequently enhanced by the rate effects. The resulting viscohypoplastic model has been evaluated using experiments of remolded kaolin clay and St. Herblain clay. It is shown that the enhanced model can predict important features of soil viscous behavior, such as rate dependency of strength and preconsolidation pressure, relaxation, and creep.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal for Numerical and Analytical Methods in Geomechanics
ISSN
0363-9061
e-ISSN
—
Volume of the periodical
44
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
21
Pages from-to
1396-1416
UT code for WoS article
000521603000001
EID of the result in the Scopus database
2-s2.0-85082326930