Search results for "reinforced concrete beams"

showing 4 items of 4 documents

Increasing the shear capacity of reinforced concrete beams using pretensioned stainless steel ribbons

2017

In this work, the second part of an experimental campaign investigating the efficiency of an alternative retrofitting method for increasing the flexural and/or shear capacity in reinforced concrete beams, based on the use of prestressed stainless steel ribbons and steel angles, is presented and analytically reproduced. This group of tests focuses on the ability of the adopted retrofitting method to improve the shear strength and ultimate deformation of reinforced concrete structural elements. As described in a companion paper, the adopted retrofitting method is alternative to traditional techniques of reinforced concrete retrofitting, being easy to install and usually reversible, and charac…

Materials science0211 other engineering and technologies020101 civil engineering02 engineering and technologyfib Model Code 20100201 civil engineeringCAM; fib Model Code 2010; reinforced concrete beams; retrofitting; shear; stainless steel ribbons; Civil and Structural Engineering; Building and Construction; Materials Science (all); Mechanics of MaterialsRetrofitting021105 building & constructionReinforced concrete beamRetrofittingGeneral Materials ScienceCivil and Structural EngineeringCAMbusiness.industryShearStructural engineeringBuilding and ConstructionReinforced concreteStainless steel ribbonShear (sheet metal)Settore ICAR/09 - Tecnica Delle CostruzioniMechanics of MaterialsMaterials Science (all)businessShear capacity
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Shear-flexure interaction of RC elements strengthened with FRP sheets

2005

An approximate physical model for evaluation of the M-V interaction resistance domains for concrete elements strengthened with FRP sheets is presented. The reliability of the model in predicting flexureshear capacity is verified by a comparison with the results of several experimental tests.

Settore ICAR/09 - Tecnica Delle CostruzioniReinforced Concrete beamsFiber reinforced polymers (FRP)RC elementShear-flexure interactionExperimental testFRP sheetFiber reinforced polymers (FRP); Shear and flexure interaction; Concrete stress-field; Reinforced Concrete beamsShear and flexure interactionConcrete stress-fieldConcrete elementPhysical model
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Increasing the flexural capacity of RC beams using steel angles and pre-tensioned stainless steel ribbons

2016

This article presents an experimental programme on reinforced concrete beams retrofitted with steel angles and pre-stressed stainless steel ribbons to increase their flexural strength and ductility. Two different configurations of the steel ribbon were designed, and two companion specimens for each type considered were subjected to a four-point bending test to facilitate a direct comparison in the analysis of the effectiveness of the retrofitting technique. The influence of longitudinal steel angles and transverse stainless steel ribbons is analysed, and the concrete confinement due to stainless steel ribbons examined. The strengthened beams show remarkable increments in flexural strength a…

reinforced concrete beamCAMflexural capacityMaterials sciencesteel anglebusiness.industrystainless steel ribbonretrofitting0211 other engineering and technologies020101 civil engineering02 engineering and technologyBuilding and ConstructionStructural engineeringStrength of materials0201 civil engineeringSettore ICAR/09 - Tecnica Delle CostruzioniFlexural strengthMechanics of Materials021105 building & constructionRetrofittingGeneral Materials ScienceMaterials Science (all)CAM; flexural capacity; reinforced concrete beams; retrofitting; stainless steel ribbons; steel angles; Civil and Structural Engineering; Building and Construction; Materials Science (all); Mechanics of MaterialsbusinessCivil and Structural EngineeringStructural Concrete
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Validation of a Shear Model for RC and Hybrid Beams with Two Different Inclinations of Transversal Reinforcement

2016

The validation of an analytical model recently proposed for evaluation of the shear capacity in Reinforced Concrete (RC) beams containing multiple inclination of transverse stirrups is presented. The model is a suitable extension of that currently proposed in Eurocode 2 for the evaluation of the shear resistance, and it is derived by means of the the variable-inclination stressfield theory based on Nielsen’s plastic approach. Experimental and numerical data available in the literature on Hybrid Steel-Trussed Concrete Beams (HSTCBs) are used for model validation and result discussion. Finally, also the comparison with a different analytical approach for the assessment of the shear resistance…

reinforced concrete beamSettore ICAR/09 - Tecnica Delle Costruzionistress field approachprecast steel-concrete trussed beamstress field approach.analytical model; different inclined stirrups; precast steel-concrete trussed beams; reinforced concrete beams; shear strength; stress field approach.analytical modelshear strengthdifferent inclined stirrupdifferent inclined stirrupsprecast steel-concrete trussed beamsreinforced concrete beams
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