Enhancement of a hypoplastic model for granular soil-structure interface behaviour

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10330833" target="_blank" >RIV/00216208:11310/16:10330833 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11440-016-0440-1" target="_blank" >http://dx.doi.org/10.1007/s11440-016-0440-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11440-016-0440-1" target="_blank" >10.1007/s11440-016-0440-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancement of a hypoplastic model for granular soil-structure interface behaviour

Popis výsledku v původním jazyce

Modelling of interfaces in geotechnical engineering is an important issue. Interfaces between structural elements (e.g., anchors, piles, tunnel linings) and soils are widely used in geotechnical engineering. The objective of this article is to propose an enhanced hypoplastic interface model that incorporates the in-plane stresses at the interface. To this aim, we develop a general approach to convert the existing hypoplastic model with a predefined limit state surface for sands into an interface model. This is achieved by adopting reduced stress and stretching vectors and redefining tensorial operations which can be used in the existing continuum model with few modifications. The enhanced interface model and the previous model are compared under constant-load, stiffness and volume conditions. The comparison is followed by a verification of two the approaches for modelling the different surface roughness. Subsequently, a validation between available experimental data from the literature versus simulations is presented. The new enhanced model gives improved predictions by the incorporation of in-plane stresses into the model formulation.

Název v anglickém jazyce

Enhancement of a hypoplastic model for granular soil-structure interface behaviour

Popis výsledku anglicky

Modelling of interfaces in geotechnical engineering is an important issue. Interfaces between structural elements (e.g., anchors, piles, tunnel linings) and soils are widely used in geotechnical engineering. The objective of this article is to propose an enhanced hypoplastic interface model that incorporates the in-plane stresses at the interface. To this aim, we develop a general approach to convert the existing hypoplastic model with a predefined limit state surface for sands into an interface model. This is achieved by adopting reduced stress and stretching vectors and redefining tensorial operations which can be used in the existing continuum model with few modifications. The enhanced interface model and the previous model are compared under constant-load, stiffness and volume conditions. The comparison is followed by a verification of two the approaches for modelling the different surface roughness. Subsequently, a validation between available experimental data from the literature versus simulations is presented. The new enhanced model gives improved predictions by the incorporation of in-plane stresses into the model formulation.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

—

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)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Acta Geotechnica

ISSN

1861-1125

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

1249-1261

Kód UT WoS článku

000388571600003

EID výsledku v databázi Scopus

2-s2.0-84958794216