6533b81ffe1ef96bd1279074

RESEARCH PRODUCT

Compressive response of substandard steel-jacketed RC columns strengthened under sustained service loads: From the local to the global behavior

Maurizio PapiaLiborio CavaleriM.f. Ferrotto

subject

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 Engineering

description

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 reproduction of the compressive response of steel jacketed columns taking into account the effects of the preload.

yearjournalcountryeditionlanguage
2018-08-01Construction and Building Materials
https://doi.org/10.1016/j.conbuildmat.2018.05.247