Hypoplastic interface models for fine-grained soils
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Hypoplastic interface models for fine-grained soils
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Hypoplastic interface models for fine-grained soils
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS
CEP obor
—
OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/GA15-05935S" target="_blank" >GA15-05935S: Vývoj termo-hydro-mechanického modelu pro expanzívní zeminy a simulace úložiště radioaktivních odpadů</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
International Journal for Numerical and Analytical Methods in Geomechanics
ISSN
0363-9061
e-ISSN
—
Svazek periodika
2016
Číslo periodika v rámci svazku
červenec
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
20
Strana od-do
—
Kód UT WoS článku
—
EID výsledku v databázi Scopus
2-s2.0-84982965775