Hypoplastic interface models for fine-grained soils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10332010" target="_blank" >RIV/00216208:11310/17:10332010 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/nag.2561" target="_blank" >http://dx.doi.org/10.1002/nag.2561</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/nag.2561" target="_blank" >10.1002/nag.2561</a>

Result language

angličtina

Original language name

Hypoplastic interface models for fine-grained soils

Original language description

Contact descriptions for interfaces between structural elements (e.g. piles, anchors and tunnel-linings) and soils are widely used in geotechnical engineering. Most of these constitutive interface models, developed for sands, consider 2D conditions. For clays, only a limited number of 3D interface models exist. In this paper, the fine-grained continuum models based on hypoplastic theories are adapted for the constitutive modelling of fine-grained interfaces. To this end, we develop a general approach to convert the existing continuum soil models into an interface model adopting reduced stress and strain-rate vectors and redefining tensorial operations in such a way that the formulation of the existing continuum models can be used without much modification. The hypoplastic Cam-clay and the explicitly formulated hypoplastic models are adapted to model the interface behaviour. In addition to the reduced stress and strain tensor formulations, we introduce an additional variable reducing the strength and stiffness of the interfaces when compared with the strength and stiffness of the soil. For verification, experiments in constant volume and constant normal stress conditions have been simulated. A comparison of the available experimental data from the literature and the simulations is presented. It is shown that the new hypoplastic interface models can describe a number of important phenomena of clay-structure interfaces.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA15-05935S" target="_blank" >GA15-05935S: Development of thermo-hydro-mechanical model for expansive soils and simulation of nuclear waste repository</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

International Journal for Numerical and Analytical Methods in Geomechanics

ISSN

0363-9061

e-ISSN

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Volume of the periodical

2016

Issue of the periodical within the volume

červenec

Country of publishing house

GB - UNITED KINGDOM

Number of pages

20

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-84982965775