Numerical Modeling of CFRP-Repaired Beam Failed in Shear

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F23%3A39921155" target="_blank" >RIV/00216275:25510/23:39921155 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/chapter/10.1007/978-3-031-32511-3_41" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-32511-3_41</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-32511-3_41" target="_blank" >10.1007/978-3-031-32511-3_41</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Modeling of CFRP-Repaired Beam Failed in Shear

Popis výsledku v původním jazyce

The numerical model of the pre-damaged reinforced concrete (RC) beam repaired by carbon fiber-reinforced polymer sheets (CFRPs) is generated in this study. The shear critical beam was first tested up to failure under monotonic loading in a four-point bending test in three different stages by repairing the damaged specimen after each failure. Due to spatial variability of the concrete mechanical properties, an uneven distribution of crack pattern concentrated on one side was observed in a symmetrically manufactured specimen. The excessive shear crack, which inclined at about 45° to the beam axis on one side of the beam near the support, was successfully repaired by the CFRPs. The repair action against the premature shear failure on one side of the beam recovered the load-carrying capacity of the as-built beam. The formation of excessive shear cracks was transferred to the unrepaired side in the second stage of the loading after the first repair. After repairing the other side of the beam by the same process, the concrete crushing, when the limiting strain of the concrete was reached under compression, characterized the overall failure mode in the third stage of loading. The numerical model adequately reproduced the nonlinear response of all repair processes on the pre-damaged beam. The experimental responses of twice-repaired specimens in terms of crack patterns and capacities were well-matched with simulated responses in the finite element environment.

Název v anglickém jazyce

Numerical Modeling of CFRP-Repaired Beam Failed in Shear

Popis výsledku anglicky

The numerical model of the pre-damaged reinforced concrete (RC) beam repaired by carbon fiber-reinforced polymer sheets (CFRPs) is generated in this study. The shear critical beam was first tested up to failure under monotonic loading in a four-point bending test in three different stages by repairing the damaged specimen after each failure. Due to spatial variability of the concrete mechanical properties, an uneven distribution of crack pattern concentrated on one side was observed in a symmetrically manufactured specimen. The excessive shear crack, which inclined at about 45° to the beam axis on one side of the beam near the support, was successfully repaired by the CFRPs. The repair action against the premature shear failure on one side of the beam recovered the load-carrying capacity of the as-built beam. The formation of excessive shear cracks was transferred to the unrepaired side in the second stage of the loading after the first repair. After repairing the other side of the beam by the same process, the concrete crushing, when the limiting strain of the concrete was reached under compression, characterized the overall failure mode in the third stage of loading. The numerical model adequately reproduced the nonlinear response of all repair processes on the pre-damaged beam. The experimental responses of twice-repaired specimens in terms of crack patterns and capacities were well-matched with simulated responses in the finite element environment.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Building for the future: durable, sustainable, resilient : proceedings of the fib Symposium 2023, Volume 2

ISBN

978-3-031-32510-6

ISSN

2366-2557

e-ISSN

2366-2565

Počet stran výsledku

9

Strana od-do

383-391

Název nakladatele

Springer Nature Switzerland AG

Místo vydání

Cham

Místo konání akce

Istanbul

Datum konání akce

5. 6. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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