Modelling undrained behaviour of sand with fines and fabric anisotropy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00550094" target="_blank" >RIV/61388998:_____/22:00550094 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11440-021-01410-7" target="_blank" >https://link.springer.com/article/10.1007/s11440-021-01410-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11440-021-01410-7" target="_blank" >10.1007/s11440-021-01410-7</a>

Result language

angličtina

Original language name

Modelling undrained behaviour of sand with fines and fabric anisotropy

Original language description

Fabric anisotropy and fines content (f(c)) in sands modify significantly their mechanical behaviour, particularly as related to static liquefaction under undrained conditions. The fabric anisotropy aspect, expressed by means of an evolving fabric tensor F, has been addressed in the recently developed Anisotropic Critical State Theory (ACST) that enhances the two critical state conditions on stress ratio (eta) and void ratio (e) of the classical Critical State Theory by an additional condition on the critical state value of F in relation to loading direction, based on this concept it introduces the dependence of dilatancy on fabric anisotropy. Various models have been successfully developed within this framework for clean sands. The f(c) aspect has been addressed within the Equivalent Granular State Theory (EGST) that substitutes a properly defined equivalent granular void ratio (e*) for e in any model for clean sand in order to obtain the response of sand with fines without any other change of the model structure and constants. Along these lines, a constitutive model is constructed in this work in order to address the effect of both F and f(c) simultaneously, by a combination of these two powerful propositions. The idea is very simple: one takes a constitutive model developed within ACST for clean sands, hence it accounts for fabric anisotropy, and substitutes the e* for e, as well as the derivative quantities of such substitution, hence it accounts for f(c). The result yields a model that can simulate data on the undrained response for a range of f(c), with emphasis on static liquefaction. It is shown that the inclusion of fabric anisotropy improves previous similar simulations made within the EGST but without the framework of ACST.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/EF15_003%2F0000493" target="_blank" >EF15_003/0000493: Centre of Excellence for Nonlinear Dynamic Behaviour of Advanced Materials in Engineering</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Acta Geotechnica

ISSN

1861-1125

e-ISSN

1861-1133

Volume of the periodical

17

Issue of the periodical within the volume

6

Country of publishing house

DE - GERMANY

Number of pages

20

Pages from-to

2305-2324

UT code for WoS article

000729004300001

EID of the result in the Scopus database

2-s2.0-85122140933