Predicted and measured time-dependent behaviour of highway embankment on cohesive soil stratum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0176836" target="_blank" >RIV/00216305:26110/26:0176836 - isvavai.cz</a>

Výsledek na webu

<a href="https://cetra.grad.hr/ocs/index.php/cetra6/cetra2020/paper/view/1025" target="_blank" >https://cetra.grad.hr/ocs/index.php/cetra6/cetra2020/paper/view/1025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5592/CO/cetra.2020.1025" target="_blank" >10.5592/CO/cetra.2020.1025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Predicted and measured time-dependent behaviour of highway embankment on cohesive soil stratum

Popis výsledku v původním jazyce

Highway embankments are important structural elements in modern road infrastructure. If such a construction is built on cohesive low-permeability soils, it is necessary to perform a prediction of long-term settlements and excess pore pressures. The paper presents a numerical analysis of an instrumented embankment constructed in the Czech Republic using the finite element method. Two alternative constitutive models were employed throughout the analysis: standardly used linear elastic perfectly plastic model and elastoplastic model with volumetric and shear hardening with stress-dependent stiffness. A construction sequence was modelled in detail including durations of partial construction stages. Both the settlements of subsoil (in short-term and long-term conditions) and excess pore pressures measured in multiple depths were evaluated and compared with predictions. Results employing a more complex constitutive model show a reasonably good agreement with measurement both in terms of settlements and pore pressures. The application of a perfectly plastic constitutive model leads to an overestimation of settlements.

Název v anglickém jazyce

Predicted and measured time-dependent behaviour of highway embankment on cohesive soil stratum

Popis výsledku anglicky

Highway embankments are important structural elements in modern road infrastructure. If such a construction is built on cohesive low-permeability soils, it is necessary to perform a prediction of long-term settlements and excess pore pressures. The paper presents a numerical analysis of an instrumented embankment constructed in the Czech Republic using the finite element method. Two alternative constitutive models were employed throughout the analysis: standardly used linear elastic perfectly plastic model and elastoplastic model with volumetric and shear hardening with stress-dependent stiffness. A construction sequence was modelled in detail including durations of partial construction stages. Both the settlements of subsoil (in short-term and long-term conditions) and excess pore pressures measured in multiple depths were evaluated and compared with predictions. Results employing a more complex constitutive model show a reasonably good agreement with measurement both in terms of settlements and pore pressures. The application of a perfectly plastic constitutive model leads to an overestimation of settlements.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

6th International Conference on Road and Rail Infrastructure (CETRA)

ISBN

978-953-8168-48-2

ISSN

1848-9842

e-ISSN

1848-9850

Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

—

Místo vydání

—

Místo konání akce

Pula

Datum konání akce

20. 5. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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