Analysis-oriented stress–strain model of CRFP-confined circular concrete columns with applied preload

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8 Citazioni (Scopus)

Abstract

The compressive behavior of FRP-confined concrete is a current issue in the field of structural retrofitting. The available models well predict the stress–strain behavior under monotonic and cyclic loads. However, in the practical applications, columns that need an increasing of bearing capacity are often strengthened under serviceability load conditions, with a stress and strain state that could change the response of the reinforced systems with respect to the case of the unloaded state. In this paper, the compressive behavior of circular FRP-confined concrete columns with preload is analyzed with the introduction of a modified analysis-oriented model. Differently from the classical formulations in which stress–strain model is aimed to the evaluation of the confinement capacity of non-preloaded elements in monotonic regime, the proposed model is also suitable for the determination of the combined response of unconfined and confined concrete subjected to an established stress/strain state in the unconfined state. The proposed model is also compared with the experimental results available in the literature under different assigned preloading levels
Lingua originaleEnglish
pagine (da-a)1-16
Numero di pagine16
RivistaDefault journal
Volume51
Stato di pubblicazionePublished - 2018

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cita questo

@article{87fac654207b46b3bbf381c73a9baa12,
title = "Analysis-oriented stress–strain model of CRFP-confined circular concrete columns with applied preload",
abstract = "The compressive behavior of FRP-confined concrete is a current issue in the field of structural retrofitting. The available models well predict the stress–strain behavior under monotonic and cyclic loads. However, in the practical applications, columns that need an increasing of bearing capacity are often strengthened under serviceability load conditions, with a stress and strain state that could change the response of the reinforced systems with respect to the case of the unloaded state. In this paper, the compressive behavior of circular FRP-confined concrete columns with preload is analyzed with the introduction of a modified analysis-oriented model. Differently from the classical formulations in which stress–strain model is aimed to the evaluation of the confinement capacity of non-preloaded elements in monotonic regime, the proposed model is also suitable for the determination of the combined response of unconfined and confined concrete subjected to an established stress/strain state in the unconfined state. The proposed model is also compared with the experimental results available in the literature under different assigned preloading levels",
keywords = "Building and Construction, Civil and Structural Engineering, Confinement, FRP, FRP-confined concrete, Materials Science (all), Mechanics of Materials, Preloading, Strengthening",
author = "Ferrotto, {Marco Filippo} and Liborio Cavaleri and Fischer",
year = "2018",
language = "English",
volume = "51",
pages = "1--16",
journal = "Default journal",

}

TY - JOUR

T1 - Analysis-oriented stress–strain model of CRFP-confined circular concrete columns with applied preload

AU - Ferrotto, Marco Filippo

AU - Cavaleri, Liborio

AU - Fischer, null

PY - 2018

Y1 - 2018

N2 - The compressive behavior of FRP-confined concrete is a current issue in the field of structural retrofitting. The available models well predict the stress–strain behavior under monotonic and cyclic loads. However, in the practical applications, columns that need an increasing of bearing capacity are often strengthened under serviceability load conditions, with a stress and strain state that could change the response of the reinforced systems with respect to the case of the unloaded state. In this paper, the compressive behavior of circular FRP-confined concrete columns with preload is analyzed with the introduction of a modified analysis-oriented model. Differently from the classical formulations in which stress–strain model is aimed to the evaluation of the confinement capacity of non-preloaded elements in monotonic regime, the proposed model is also suitable for the determination of the combined response of unconfined and confined concrete subjected to an established stress/strain state in the unconfined state. The proposed model is also compared with the experimental results available in the literature under different assigned preloading levels

AB - The compressive behavior of FRP-confined concrete is a current issue in the field of structural retrofitting. The available models well predict the stress–strain behavior under monotonic and cyclic loads. However, in the practical applications, columns that need an increasing of bearing capacity are often strengthened under serviceability load conditions, with a stress and strain state that could change the response of the reinforced systems with respect to the case of the unloaded state. In this paper, the compressive behavior of circular FRP-confined concrete columns with preload is analyzed with the introduction of a modified analysis-oriented model. Differently from the classical formulations in which stress–strain model is aimed to the evaluation of the confinement capacity of non-preloaded elements in monotonic regime, the proposed model is also suitable for the determination of the combined response of unconfined and confined concrete subjected to an established stress/strain state in the unconfined state. The proposed model is also compared with the experimental results available in the literature under different assigned preloading levels

KW - Building and Construction

KW - Civil and Structural Engineering

KW - Confinement

KW - FRP

KW - FRP-confined concrete

KW - Materials Science (all)

KW - Mechanics of Materials

KW - Preloading

KW - Strengthening

UR - http://hdl.handle.net/10447/338177

M3 - Article

VL - 51

SP - 1

EP - 16

JO - Default journal

JF - Default journal

ER -