INFLUENCE OF CONCRETE COVER ON THE ANCHORING LENGTH OF FRP REINFORCEMENT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F13%3APU104457" target="_blank" >RIV/00216305:26110/13:PU104457 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

INFLUENCE OF CONCRETE COVER ON THE ANCHORING LENGTH OF FRP REINFORCEMENT

Popis výsledku v původním jazyce

Several years ago a new FRP reinforcement system was developed at Brno University of Technology. During the following years this system was refined to maximise its benefits and to lower the initial costs related to FRP materials. There was a special focus on anchoring and the development of a pre-stressed reinforcement length. A large number of surfacing types were tested to find the best cohesion between reinforcement bars and concrete. The gained results were gathered and analysed using a bond-slip relationship to describe the behaviour of a reinforcement bar along the anchoring length. This principle served as a basis for creating analytical relations suited to the calculation of the minimal required anchoring length of reinforcement. However, these relations do not cover the influences of either the surfacing of the bar or the thickness of the concrete cover. To factor these influences into the calculation a new extension was proposed. First, a number of numerical models were created to verify the proposed design equations in theory. The obtained results are within the range predicted by the analytical solution. As the final confirmation of the equation a set of real-world tests was performed. The final conclusion and a comparison between the real tests and the analytical and numerical solutions can be found at the end of the article.

Název v anglickém jazyce

INFLUENCE OF CONCRETE COVER ON THE ANCHORING LENGTH OF FRP REINFORCEMENT

Popis výsledku anglicky

Several years ago a new FRP reinforcement system was developed at Brno University of Technology. During the following years this system was refined to maximise its benefits and to lower the initial costs related to FRP materials. There was a special focus on anchoring and the development of a pre-stressed reinforcement length. A large number of surfacing types were tested to find the best cohesion between reinforcement bars and concrete. The gained results were gathered and analysed using a bond-slip relationship to describe the behaviour of a reinforcement bar along the anchoring length. This principle served as a basis for creating analytical relations suited to the calculation of the minimal required anchoring length of reinforcement. However, these relations do not cover the influences of either the surfacing of the bar or the thickness of the concrete cover. To factor these influences into the calculation a new extension was proposed. First, a number of numerical models were created to verify the proposed design equations in theory. The obtained results are within the range predicted by the analytical solution. As the final confirmation of the equation a set of real-world tests was performed. The final conclusion and a comparison between the real tests and the analytical and numerical solutions can be found at the end of the article.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

fib Symposium - Engineering a Concrete Future: Technology, Modeling and Construction

ISBN

978-965-92039-0-1

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

131-134

Název nakladatele

TECHNION printing unit

Místo vydání

Tel-Aviv

Místo konání akce

Tel-Aviv

Datum konání akce

22. 4. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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