Stochastic-Based Nonlinear Numerical Modeling of Shear Critical RC Beam Repaired with Bonded CFRP Sheets

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F19%3A39914367" target="_blank" >RIV/00216275:25510/19:39914367 - isvavai.cz</a>

Result on the web

<a href="https://ascelibrary.org/doi/10.1061/%28ASCE%29CC.1943-5614.0000966" target="_blank" >https://ascelibrary.org/doi/10.1061/%28ASCE%29CC.1943-5614.0000966</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000966" target="_blank" >10.1061/(ASCE)CC.1943-5614.0000966</a>

Result language

angličtina

Original language name

Stochastic-Based Nonlinear Numerical Modeling of Shear Critical RC Beam Repaired with Bonded CFRP Sheets

Original language description

The response of a shear critical substandard reinforced concrete beam and the structural repair of the predamaged beam by carbon-fiber-reinforced polymer sheets (CFRPs) were investigated by advanced numerical modeling method. First, the specimen was tested up to failure under monotonic loading in a four-point bending test. Owing to spatial variability of the concrete mechanical properties over a specific region, the damage was concentrated on one side of the beam. The severe shear cracks on the damaged side were then successfully repaired by externally bonded CFRP sheets. The former load-carrying capacity of the repaired beam was recovered, and the crack formation was transferred to the other side of the specimen, which had not been repaired. After repairing the unrepaired side of the beam using the same process, the failure mode was characterized by concrete crushing when the limiting strain of the concrete was reached under compression. The unsymmetrical crack pattern in the as-built specimen due to the uneven distribution of the concrete mechanical properties was reproduced by a random fields approach that combines the nonlinear finite-element method with stochastic sampling. In addition, the nonlinear response of the repair processes on the predamaged beam was adequately reproduced in the finite-element environment. The crack patterns and capacities obtained in the numerical solutions matched well the experimentally observed responses of the as-built and twice-repaired specimens.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

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

Name of the periodical

JOURNAL OF COMPOSITES FOR CONSTRUCTION

ISSN

1090-0268

e-ISSN

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Volume of the periodical

23

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000481580300003

EID of the result in the Scopus database

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