Effects of Differential Shrinkage in Concrete Bridges

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00317985" target="_blank" >RIV/68407700:21110/17:00317985 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.scientific.net/SSP.259.158" target="_blank" >https://www.scientific.net/SSP.259.158</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.259.158" target="_blank" >10.4028/www.scientific.net/SSP.259.158</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of Differential Shrinkage in Concrete Bridges

Popis výsledku v původním jazyce

The effects of the external environment significantly affect the distribution of stress in concrete bridges. Diffusion of humidity and temperature fluctuations, as a result of the effects of the external environment, result in the emergence of a very complex state of stress and strain in the elements of concrete bridges and the creation of acceptable or unacceptable cracks. In order to predict these correctly, one must use a creep and shrinkage model that realistically describes the moisture diffusion process, which causes that the shrinkage and drying creep of the bulky parts of the box cross section are greatly delayed compared to the thin parts. This delay cannot be predicted with the classical approach, in which either the shrinkage strain and the creep coefficient (or compliance function) are considered as uniform throughout the cross section, or the thickness effect is simply described by a multiplicative factor on shrinkage strain. With full respect for these phenomena the bridge of a double T section segmental bridge is analyzed.

Název v anglickém jazyce

Effects of Differential Shrinkage in Concrete Bridges

Popis výsledku anglicky

The effects of the external environment significantly affect the distribution of stress in concrete bridges. Diffusion of humidity and temperature fluctuations, as a result of the effects of the external environment, result in the emergence of a very complex state of stress and strain in the elements of concrete bridges and the creation of acceptable or unacceptable cracks. In order to predict these correctly, one must use a creep and shrinkage model that realistically describes the moisture diffusion process, which causes that the shrinkage and drying creep of the bulky parts of the box cross section are greatly delayed compared to the thin parts. This delay cannot be predicted with the classical approach, in which either the shrinkage strain and the creep coefficient (or compliance function) are considered as uniform throughout the cross section, or the thickness effect is simply described by a multiplicative factor on shrinkage strain. With full respect for these phenomena the bridge of a double T section segmental bridge is analyzed.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA16-04454S" target="_blank" >GA16-04454S: Nejistoty na materiálové úrovni ovlivňující nejistoty na úrovni konstrukce</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

23rd Concrete Days 2016

ISBN

978-3-0357-1105-9

ISSN

1012-0394

e-ISSN

1662-9779

Počet stran výsledku

6

Strana od-do

158-163

Název nakladatele

Trans Tech Publications

Místo vydání

Curich

Místo konání akce

Litomyšl

Datum konání akce

30. 11. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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