An empirical model for predicting the mechanical properties of FRP-confined concrete

Vintzileou, Elizabeth; Panagiotidou, Evangelia

doi:10.1016/j.conbuildmat.2006.12.009

Cited by 56 publications

(25 citation statements)

References 47 publications

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“…In the literature, various models for the confined compressive strength of concrete have been developed since 1968 [37][38][39][40][41][42][43][44][45][46][47][48][49]. Summary of these models including those recommended by various design guidelines for FRP confined concrete elements are given in Table 5.…”

Section: Estimation Of Ultimate Compressive Strengthmentioning

confidence: 99%

Experimental study on compressive behavior and failure analysis of composite concrete confined by glass/epoxy ±55° filament wound pipes

Gemi

Köroğlu

Ashour

2018

Composite Structures

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Section: Estimation Of Ultimate Compressive Strengthmentioning

confidence: 99%

Experimental study on compressive behavior and failure analysis of composite concrete confined by glass/epoxy ±55° filament wound pipes

Gemi

Köroğlu

Ashour

2018

Composite Structures

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“…For FRP-confined concrete, many studies suggested that ultimate axial strain can also be related to the lateral confining pressure (e.g. Karbhari, Gao 1997;Shehata et al 2002;De Lorenzis, Tepfers 2003;Lam, Teng 2003a;Matthys et al 2005;Ilki 2006;Vintzileou, Panagiotidou 2008;Jiang, Teng 2007).…”

Section: Axial Strain Of Frp-confined Concretementioning

confidence: 99%

“…Empirical or analytical models (e.g. Samaan et al 1998;Toutanji 1999;Miyauchi et al 1999;Teng et al 2002;Siddhawartha et al 2005;Jiang, Teng 2007;Rousakis, Karabinis 2008;Vintzileou, Panagiotidou 2008), Teng et al (2002) proposed:…”

Section: Axial Strain Of Frp-confined Concretementioning

confidence: 99%

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

Benzaid

Mesbah

2014

Journal of Civil Engineering and Management

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This paper presents the results of an experimental study on the behaviour of axially loaded short concrete columns, with different cross sections that have been externally strengthened with carbon fibre-reinforced polymer (CFRP) sheets. Six series, forming the total of 60 specimens, were subjected to axial compression. All the test specimens were loaded to failure in axial compression and investigated in both axial and transverse directions. According to the obtained test results, FRP-confined specimen failure occurs before the FRP reached the ultimate strain capacities. Thus, the failure occurs prematurely and the circumferential failure strain is lower than the ultimate strain obtained from the standard tensile testing of the FRP composite. In existing models for FRP-confined concrete, it is commonly assumed that the FRP ruptures when the hoop stress in the FRP jacket reaches its tensile strength from either flat coupon tests, which is herein referred to as the FRP material tensile strength. This phenomenon considerably affects the accuracy of the existing models for FRP-confined concrete. On the basis of the effective lateral confining pressure of the composite jacket and the effective circumferential FRP failure strain, new equations were proposed to predict the strength of FRP-confined concrete and corresponding strain for each of the cross section geometry used, circular and square. The estimations given by these equations were compared with the experimental ones and general conclusions were drawn.

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“…14 [Vintzileou and Panagiotidou 2008] 1 + 2.8(P u / f co ) Table 1. Different models for the strength enhancement of FRP confined concrete cylinders.…”

Section: Previous Research On Behavior Of Cfrp-confined Concretementioning

confidence: 99%

Genetic programming and orthogonal least squares: a hybrid approach to modeling the compressive strength of CFRP-confined concrete cylinders

Gandomi

Alavi

Arjmandi

et al. 2010

J. Mech. Mater. Struct.

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The main objective of this paper is to apply genetic programming (GP) with an orthogonal least squares (OLS) algorithm to derive a predictive model for the compressive strength of carbon fiber-reinforced plastic (CFRP) confined concrete cylinders. The GP/OLS model was developed based on experimental results obtained from the literature. Traditional GP-based and least squares regression analyses were performed using the same variables and data sets to benchmark the GP/OLS model. A subsequent parametric analysis was carried out and the trends of the results were confirmed via previous laboratory studies. The results indicate that the proposed formula can predict the ultimate compressive strength of concrete cylinders with an acceptable level of accuracy. The GP/OLS results are more accurate than those obtained using GP, regression, or several CFRP confinement models found in the literature. The GP/OLS-based formula is simple and straightforward, and provides a valuable tool for analysis.

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An empirical model for predicting the mechanical properties of FRP-confined concrete

Cited by 56 publications

References 47 publications

Experimental study on compressive behavior and failure analysis of composite concrete confined by glass/epoxy ±55° filament wound pipes

Experimental study on compressive behavior and failure analysis of composite concrete confined by glass/epoxy ±55° filament wound pipes

The Confinement of Concrete in Compression Using CFRP Composites – Effective Design Equations

Genetic programming and orthogonal least squares: a hybrid approach to modeling the compressive strength of CFRP-confined concrete cylinders

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