AustralieFrV1, Main, Exploration, bibRecord, 004E02

Modelling of flexural behaviour of RC beams strengthened with NSM CFRP rods including serviceability

Identifieur interne : 004E02 ( Main/Exploration ); précédent : 004E01; suivant : 004E03

Modelling of flexural behaviour of RC beams strengthened with NSM CFRP rods including serviceability

Auteurs : Firas Al-Mahmoud [France] ; Arnaud Castel [Australie] ; Raoul Francois [France]

Source :

European journal of environmental and civil engineering [ 1964-8189 ] ; 2013.

RBID : Pascal:13-0269272

Descripteurs français

Pascal (Inist)
- Construction béton, Béton armé, Poutre, Renforcement mécanique, Plastique renforcé fibre, Modélisation, Sollicitation utilisation, Méthode élément fini, Rigidité, Déflexion, Etude expérimentale, Propriété mécanique, Relation contrainte déformation, Moment fléchissant, Etude comparative, Fissuration.

English descriptors

KwdEn :
- Beam(mechanics), Bending moment, Comparative study, Concrete construction, Cracking, Deflection, Experimental study, Fibre reinforced plastics, Finite element method, Mechanical properties, Modeling, Reinforced concrete, Service load, Stiffness, Strengthening, Stress strain relation.

Abstract

The proposed model calculates the deflection of carbon fibre-reinforced polymer (CFRP) strengthened beams. In this model, the beams were strengthened before loading, so in an uncracked state. The calculation before cracking uses conventional existing models. The calculation of the deflection after cracking is based on a non-linear Macro-Finite-Element (M.F.E.). This M.F.E. is a beam Finite Element characterised mainly (for the bending problems) by its homogeneous average moment of inertia. The typical global behaviour of beams strengthened by NSM rods s was modelled as well as repeated loading cycles. The model is validated experimentally on two CFRP strengthened concrete beams with two sections of CFRP rods subjected to four-point flexure under repeated loading cycles after cracking and then a constant loading rate until failure. Results show that the model gives good predictions of the bending stiffness of the beam during the loading cycle and the permanent residual deflection after unloading due to crack propagation.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<term>Sollicitation utilisation</term>
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<term>Déflexion</term>
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<front><div type="abstract" xml:lang="en">The proposed model calculates the deflection of carbon fibre-reinforced polymer (CFRP) strengthened beams. In this model, the beams were strengthened before loading, so in an uncracked state. The calculation before cracking uses conventional existing models. The calculation of the deflection after cracking is based on a non-linear Macro-Finite-Element (M.F.E.). This M.F.E. is a beam Finite Element characterised mainly (for the bending problems) by its homogeneous average moment of inertia. The typical global behaviour of beams strengthened by NSM rods s was modelled as well as repeated loading cycles. The model is validated experimentally on two CFRP strengthened concrete beams with two sections of CFRP rods subjected to four-point flexure under repeated loading cycles after cracking and then a constant loading rate until failure. Results show that the model gives good predictions of the bending stiffness of the beam during the loading cycle and the permanent residual deflection after unloading due to crack propagation.</div>
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Modelling of flexural behaviour of RC beams strengthened with NSM CFRP rods including serviceability

Modelling of flexural behaviour of RC beams strengthened with NSM CFRP rods including serviceability

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri