Analysis of load-strain models for RC square columns confined with CFRP

Pedro Faustino, Carlos Chastre

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This article presents the comparison between 6 theoretical models of axially confined concrete columns with the experimental results of 7 tested columns of different authors. This study analysed the accuracy of 6 different confinement models for square columns taking into account the results of experimental tests on 7 RC columns confined with CFRP sheets with different dimensions and carried out by different authors. The profile of curves, the peak/failure values, the stress-strain and axial-to-lateral relations were studied to conclude which models show the best correlation with the experimental test results. Quantification of this deviation was carried out for key parameters. Some models predicted peak values with reasonable accuracy - Manfredi & Realfonzo, Campione & Miraglia, Lam & Teng, Pellegrino & Modena - although for the whole load-strain behaviour only the model of Faustino, Chastre & Paula seemed to be reasonably accurate in most cases. (C) 2015 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)23-41
Number of pages19
JournalComposites Part B: Engineering
Volume74
DOIs
Publication statusPublished - 1 Jun 2015

Keywords

  • Carbon fibre
  • Mechanical properties
  • Strength
  • Plastic deformation
  • Analytical modelling
  • CONCRETE COLUMNS
  • FRP COMPOSITES
  • PEAK STRENGTH
  • COMPRESSION
  • MEMBERS
  • PERFORMANCE
  • PREDICTION
  • DILATION
  • SECTIONS
  • BEHAVIOR

Cite this

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title = "Analysis of load-strain models for RC square columns confined with CFRP",
abstract = "This article presents the comparison between 6 theoretical models of axially confined concrete columns with the experimental results of 7 tested columns of different authors. This study analysed the accuracy of 6 different confinement models for square columns taking into account the results of experimental tests on 7 RC columns confined with CFRP sheets with different dimensions and carried out by different authors. The profile of curves, the peak/failure values, the stress-strain and axial-to-lateral relations were studied to conclude which models show the best correlation with the experimental test results. Quantification of this deviation was carried out for key parameters. Some models predicted peak values with reasonable accuracy - Manfredi & Realfonzo, Campione & Miraglia, Lam & Teng, Pellegrino & Modena - although for the whole load-strain behaviour only the model of Faustino, Chastre & Paula seemed to be reasonably accurate in most cases. (C) 2015 Elsevier Ltd. All rights reserved.",
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Analysis of load-strain models for RC square columns confined with CFRP. / Faustino, Pedro; Chastre, Carlos.

In: Composites Part B: Engineering, Vol. 74, 01.06.2015, p. 23-41.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis of load-strain models for RC square columns confined with CFRP

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AU - Chastre, Carlos

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N2 - This article presents the comparison between 6 theoretical models of axially confined concrete columns with the experimental results of 7 tested columns of different authors. This study analysed the accuracy of 6 different confinement models for square columns taking into account the results of experimental tests on 7 RC columns confined with CFRP sheets with different dimensions and carried out by different authors. The profile of curves, the peak/failure values, the stress-strain and axial-to-lateral relations were studied to conclude which models show the best correlation with the experimental test results. Quantification of this deviation was carried out for key parameters. Some models predicted peak values with reasonable accuracy - Manfredi & Realfonzo, Campione & Miraglia, Lam & Teng, Pellegrino & Modena - although for the whole load-strain behaviour only the model of Faustino, Chastre & Paula seemed to be reasonably accurate in most cases. (C) 2015 Elsevier Ltd. All rights reserved.

AB - This article presents the comparison between 6 theoretical models of axially confined concrete columns with the experimental results of 7 tested columns of different authors. This study analysed the accuracy of 6 different confinement models for square columns taking into account the results of experimental tests on 7 RC columns confined with CFRP sheets with different dimensions and carried out by different authors. The profile of curves, the peak/failure values, the stress-strain and axial-to-lateral relations were studied to conclude which models show the best correlation with the experimental test results. Quantification of this deviation was carried out for key parameters. Some models predicted peak values with reasonable accuracy - Manfredi & Realfonzo, Campione & Miraglia, Lam & Teng, Pellegrino & Modena - although for the whole load-strain behaviour only the model of Faustino, Chastre & Paula seemed to be reasonably accurate in most cases. (C) 2015 Elsevier Ltd. All rights reserved.

KW - Carbon fibre

KW - Mechanical properties

KW - Strength

KW - Plastic deformation

KW - Analytical modelling

KW - CONCRETE COLUMNS

KW - FRP COMPOSITES

KW - PEAK STRENGTH

KW - COMPRESSION

KW - MEMBERS

KW - PERFORMANCE

KW - PREDICTION

KW - DILATION

KW - SECTIONS

KW - BEHAVIOR

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