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Simplified design-oriented axial stress-strain model for FRP-confined normal- and high-strength concrete. / Fallah Pour, Ali; Ozbakkaloglu, Togay; Vincent, Thomas.

In: Engineering Structures, Vol. 175, 15.11.2018, p. 501-516.

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Fallah Pour, Ali ; Ozbakkaloglu, Togay ; Vincent, Thomas. / Simplified design-oriented axial stress-strain model for FRP-confined normal- and high-strength concrete. In: Engineering Structures. 2018 ; Vol. 175. pp. 501-516.

Bibtex

@article{8d89522d4eb4477182750b722229fb7f,
title = "Simplified design-oriented axial stress-strain model for FRP-confined normal- and high-strength concrete",
abstract = "This study presents a simple yet powerful design-oriented model that makes use of commonly available input data to predict the axial stress–strain behavior of fiber reinforced polymer (FRP)-confined concrete in circular sections. The approach of identifying the most influential parameters on the axial compressive behavior of FRP-confined concrete and developing new expressions based on these parameters by balancing accuracy and simplicity of use was adopted. A comprehensive experimental test database of FRP-confined normal-strength and high-strength concrete (NSC and HSC) was compiled and used in the model development. Although the proposed expressions to predict the axial stress and strain at the ultimate and transition point of the stress-strain curve were simple, the results show that they performed as good as or better than the best performing existing models. Based on these expressions a model to predict the complete axial stress-strain curve of FRP-confined concrete was developed and verified against the available experimental data. The proposed model is applicable to both FRP-confined NSC and HSC with compressive strengths up to 120 MPa, and is the first accurate design-oriented model to provide the complete stress-strain curve of FRP-confined HSC.",
keywords = "Axial compression, FRP-confined concrete, High-strength concrete (HSC), Lateral confinement, Stress-strain relations, Ultimate axial stress and strain",
author = "{Fallah Pour}, Ali and Togay Ozbakkaloglu and Thomas Vincent",
year = "2018",
month = nov,
day = "15",
doi = "10.1016/j.engstruct.2018.07.099",
language = "English",
volume = "175",
pages = "501--516",
journal = "Engineering Structures",
issn = "0141-0296",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Simplified design-oriented axial stress-strain model for FRP-confined normal- and high-strength concrete

AU - Fallah Pour, Ali

AU - Ozbakkaloglu, Togay

AU - Vincent, Thomas

PY - 2018/11/15

Y1 - 2018/11/15

N2 - This study presents a simple yet powerful design-oriented model that makes use of commonly available input data to predict the axial stress–strain behavior of fiber reinforced polymer (FRP)-confined concrete in circular sections. The approach of identifying the most influential parameters on the axial compressive behavior of FRP-confined concrete and developing new expressions based on these parameters by balancing accuracy and simplicity of use was adopted. A comprehensive experimental test database of FRP-confined normal-strength and high-strength concrete (NSC and HSC) was compiled and used in the model development. Although the proposed expressions to predict the axial stress and strain at the ultimate and transition point of the stress-strain curve were simple, the results show that they performed as good as or better than the best performing existing models. Based on these expressions a model to predict the complete axial stress-strain curve of FRP-confined concrete was developed and verified against the available experimental data. The proposed model is applicable to both FRP-confined NSC and HSC with compressive strengths up to 120 MPa, and is the first accurate design-oriented model to provide the complete stress-strain curve of FRP-confined HSC.

AB - This study presents a simple yet powerful design-oriented model that makes use of commonly available input data to predict the axial stress–strain behavior of fiber reinforced polymer (FRP)-confined concrete in circular sections. The approach of identifying the most influential parameters on the axial compressive behavior of FRP-confined concrete and developing new expressions based on these parameters by balancing accuracy and simplicity of use was adopted. A comprehensive experimental test database of FRP-confined normal-strength and high-strength concrete (NSC and HSC) was compiled and used in the model development. Although the proposed expressions to predict the axial stress and strain at the ultimate and transition point of the stress-strain curve were simple, the results show that they performed as good as or better than the best performing existing models. Based on these expressions a model to predict the complete axial stress-strain curve of FRP-confined concrete was developed and verified against the available experimental data. The proposed model is applicable to both FRP-confined NSC and HSC with compressive strengths up to 120 MPa, and is the first accurate design-oriented model to provide the complete stress-strain curve of FRP-confined HSC.

KW - Axial compression

KW - FRP-confined concrete

KW - High-strength concrete (HSC)

KW - Lateral confinement

KW - Stress-strain relations

KW - Ultimate axial stress and strain

UR - http://www.scopus.com/inward/record.url?scp=85052076341&partnerID=8YFLogxK

U2 - 10.1016/j.engstruct.2018.07.099

DO - 10.1016/j.engstruct.2018.07.099

M3 - Article

AN - SCOPUS:85052076341

VL - 175

SP - 501

EP - 516

JO - Engineering Structures

JF - Engineering Structures

SN - 0141-0296

ER -