Search results for "MCFT"

showing 2 items of 2 documents

Ultimate Shear of RC Beams with Corroded Stirrups and Strengthened with FRP

2019

Transverse reinforcement plays a key role in the response behavior of reinforced concrete beams. Therefore, corrosion of steel stirrups may change the failure mode of elements from bending to shear, leading to a brittle and catastrophic crisis. It is important to strengthen reinforced concrete beams with corroded stirrups to enhance the shear resistance. This paper presents a formulation, based on the modified compression field theory, to estimate the ultimate shear of reinforced concrete beams strengthened with FRP, because of stirrup corrosion. The detrimental effect of corrosion on steel stirrup yield strength was taken into account by introducing an empirical decay law. The effective st…

Modified Compression Field TheoryBeams; Corrosion; FRP; MCFT; Parametric analysis; Reinforced concrete; Shear; Stirrups; Civil and Structural Engineering; Building and ConstructionMaterials science0211 other engineering and technologies020101 civil engineering02 engineering and technologyshearstirrupslcsh:TH1-97450201 civil engineeringCorrosioncorrosion; stirrups; shear; FRP; MCFT; reinforced concrete; beams; parametric analysisBrittleness021105 building & constructionArchitectureMCFTCivil and Structural EngineeringEnvironmental Science (all)corrosion2300Parametric analysibusiness.industryBeamStructural engineeringBuilding and ConstructionFibre-reinforced plasticBeams; Corrosion; FRP; MCFT; Parametric analysis; Reinforced concrete; Shear; Stirrups; Architecture; 2300; Environmental Science (all); Civil and Structural Engineering; Building and ConstructionReinforced concretereinforced concreteStirrupShear (geology)parametric analysisbeamsbusinessFailure mode and effects analysisFRPlcsh:Building constructionBuildings; Volume 9; Issue 2; Pages: 34
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Response behaviour of reinforced concrete beams strengthened in shear with FRP

2019

In this paper an analytical model, able to predict the shear-displacement response of slender RC beams reinforced in shear with FRP, is presented. It allows to evaluate the complete strain and stress fields, for each load step, on the basis of the MCFT framework. The key role of the effective strain of FRP reinforcement at failure has been investigated. At the same time, the interaction FRP-steel stirrups has been taken into account by introducing an appropriate factor. It is able to reproduce the decrease of stirrups stress level when an external reinforcement is used. The proposed model has been validate against a database of specimens collected in literature. Results have shown the remar…

RC beamShearMCFTModellingFRP
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