Search results for "Confinement lateral pressure"

showing 3 items of 3 documents

Experimental investigation on the compressive behavior of short-term preloaded carbon fiber reinforced polymer-confined concrete columns

2017

Strengthening of concrete columns with fiber reinforced polymer sheets provides a good improvement to the existing structural members in terms of load and strain capacity due to the properties of the composite jacket. A proper knowledge of the load–strain response of the composite members is necessary to design retrofitting intervention of existing structures; however, so far the available design methods do not allow to take into account the effect of the possible presence of service loads on the compressive behavior of the reinforced columns. An experimental investigation on the compressive behavior of preloaded circular concrete columns reinforced with carbon fiber reinforced polymer was …

Carbon fiber reinforced polymerMaterials scienceconfined concretebusiness.industry0211 other engineering and technologies020101 civil engineering02 engineering and technologyBuilding and ConstructionStructural engineering0201 civil engineeringTerm (time)axial capacitySettore ICAR/09 - Tecnica Delle CostruzioniMechanics of Materialsconfinement021105 building & constructionGeneral Materials Sciencebusinessfiber reinforced polymer (FRP)preloadingconfinement lateral pressureCivil and Structural Engineering
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Compressive response of substandard steel-jacketed RC columns strengthened under sustained service loads: From the local to the global behavior

2018

Abstract This paper presents an experimental investigation on substandard partially steel jacketed RC columns strengthened under sustained loads and loaded until failure. The aim of the study is to compare the compressive response of preloaded columns with respect to the tests without preload to obtain a more realistic prediction of load-carrying capacity of structural columns after retrofitting under serviceability loads. The influence of the preload level, the delayed contribution of the confining device during the loading process and the time dependent effects are highlighted for the tested specimens. Based on the experimental observations, an analysis-oriented model is proposed for the …

Confinement lateral pressureServiceability (structure)business.industryComputer scienceSteel jacketing0211 other engineering and technologies020101 civil engineering02 engineering and technologyBuilding and ConstructionStructural engineeringSustained loadPreloadingConfined concreteRc columns0201 civil engineeringSettore ICAR/09 - Tecnica Delle CostruzioniSettore ING-IND/31 - ElettrotecnicaPreload021105 building & constructionRetrofittingGeneral Materials ScienceMaterials Science (all)businessConfinementCivil and Structural EngineeringConstruction and Building Materials
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A strategy for the finite element modeling of FRP-confined concrete columns subjected to preload

2018

Abstract Compressive behavior of columns strengthened by means of an outer elastic confinement provided e.g. by fiber-reinforced polymer (FRP) jackets has become a main topic in the field of structural retrofitting. In details, the problem of the response assessment of strengthened columns is still under study. Many analytical formulations have been proposed to describe the compressive behavior of confined concrete under both monotonic and cyclic loads. However, the effect of a stress/strain level in the columns already present prior to apply the confinement has been generally neglected until now, also because of the lack of well defined strategies of modeling. In this frame, here, (1) a FE…

Materials scienceConfinement lateral pressure0211 other engineering and technologies020101 civil engineeringMonotonic function02 engineering and technologyConcrete damaged plasticity model0201 civil engineering021105 building & constructionRetrofittingWell-definedfiber reinforced polymer (FRP)SofteningCivil and Structural Engineeringbusiness.industryStructural engineeringFibre-reinforced plasticFinite-element modelingPreloadingFinite element methodConfined concretePreloadSettore ICAR/09 - Tecnica Delle CostruzioniHardening (metallurgy)ABAQUSbusinessConfinement
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