Probabilistic Design Models for Ultimate Strength and Strain of FRP-Confined Concrete

Baji, Hassan; Ronagh, Hamid Reza; Li, Chun Qing

doi:10.1061/(asce)cc.1943-5614.0000704

Cited by 17 publications

(9 citation statements)

References 75 publications

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“…Over the last three decades, many ultimate axial strain models [1][2][3][4][5][6][7][8][9][10][11] for FRP-wrapped concrete cylinders have been proposed based on the regression of experimental results. The first category of models directly shows the ultimate axial strain, εcc, rather than using other parameters such as strength ratio or stress-strain relationship.…”

Section: Empirical Modelmentioning

confidence: 99%

“…The first category of models directly shows the ultimate axial strain, εcc, rather than using other parameters such as strength ratio or stress-strain relationship. The models of Karbhari et al [1], Xiao and Wu [5], Lam and Teng [6], Youssef et al [7], Liang [9], Pham and Hadi [10], and Baji et al [11] fall within this category. The second model category contains using the strength ratio f'cc/f'co and the stress-strain relationship to determine the ultimate strain of confined concrete, such models as Samaan et al [2], Toutanji [3] and Saafi et al [4] and so on.…”

Section: Empirical Modelmentioning

confidence: 99%

“…It is necessary to understand the ultimate deformation condition (i.e., the ultimate axial strain εcc) of FRP-confined concrete columns. On this account, many ultimate axial strain models [1][2][3][4][5][6][7][8][9][10][11] for concrete cylinder have been developed.…”

Section: Introductionmentioning

confidence: 99%

“…The empirical models are generally obtained from regressing test data. The typical empirical models include Karbhari and Gao [1], Samaan et al [2], Toutanji [3], Saafi et al [4], Xiao and Wu [5], Lam and Teng [6], Youssef et al [7], Fahmy and Wu [8], Liang [9], Pham and Hadi [10] and Baji et al [11] and so on. Besides the empirical model mentioned above, Karbhari and Gao [1] proposed a theoretical model based on Hook's law and an assumption of concrete volume invariance under axial compression.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation of Ultimate Axial Strain Models for Fiber-Reinforced Polymer-Confined Concrete Cylinders

Chen,

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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Fiber-reinforced polymer (FRP) composite has been widely applied to reinforce and rehabilitate concrete columns in civil engineering. It is necessary to deeply understand the ultimate deformation (i.e., the ultimate axial strain εcc ) of FRP-confined concrete columns. A large database including different types of FRP (conventional FRP and large-rupture-strain FRP), concrete compressive strengths (19.4 MPa-169.7 MPa), and cylinder sizes (51 mm-508 mm), as well as various concrete types, is collected in this study. For this reason, several existing ultimate axial strain modes for FRP-confined cylinders have been evaluated via some statistical parameters based on the database. The verification results illustrate that the prediction accuracy of axial strain models is not good enough due to the intrinsic difficulty in predicting deformation and variability of data source, although the available models with better performance can achieve the average ratio between experimental and predicted strain value ( ε c c exp e / ε c c pred ) below 10%.

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Section: Empirical Modelmentioning

confidence: 99%

Section: Empirical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Ultimate Axial Strain Models for Fiber-Reinforced Polymer-Confined Concrete Cylinders

Chen,

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…Also, several theoretical models have been proposed to predict the compressive strength of FRP-confined concrete columns. 3–11 Lam and Teng 3 model and Pham and Hadi 4 model are two well-known existing models for predicting the compressive strength of FRP-confined rectangular and square concrete columns.…”

Section: Introductionmentioning

confidence: 99%

Providing a model for estimating the compressive strength of square and rectangular columns confined with a variety of fibre-reinforced polymer sheets

Moodi

Shahri

Mousavi

2017

Journal of Reinforced Plastics and Composites

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One of the most common ways of strengthening the columns is the confinement of the reinforced concrete columns. So far, several experiments have been conducted on concrete columns confined with fibre-reinforced polymer sheets and the results show that the use of fibre-reinforced polymer sheets increases the compressive strength of the concrete columns effectively. Different models in order to determine the compressive strength of the fibre-reinforced-polymer-confined concrete columns are provided in the previous researches. In this study, a wide range of experimental data for square and rectangular columns confined with a variety of fibre-reinforced polymer sheets has been collected. In order to increase the accuracy in the existing models, a modified model for predicting the compressive strength of square and rectangular columns confined with different fibre-reinforced sheets has been proposed by using the collected data. In the current study, the fibre-reinforced polymer strain efficiency factor and the section shape factor are composed and considered as a unique factor. Considering the fibre-reinforced polymer hoop strain concentration at the affected area including the corners area and the surrounding area of them, this factor has been adopted as a fibre-reinforced polymer averaged hoop strain factor for the whole circumference of the section. Based on the published experimental data, a comparison between the analytical results obtained with the present model and the results of the other models, shows considerably better results of the proposed model described in this study. Moreover, application of the proposed model for behaviour prediction of concrete-filled fibre-reinforced polymer tubes is evaluated in this study and the results show that the proposed model is more accurate than the other models.

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Comparison of CFRP and GFRP Wraps on Reducing Seismic Damage of Deficient Reinforced Concrete Structures

Cao

Pham

2019

Int J Civ Eng

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Probabilistic Design Models for Ultimate Strength and Strain of FRP-Confined Concrete

Cited by 17 publications

References 75 publications

Evaluation of Ultimate Axial Strain Models for Fiber-Reinforced Polymer-Confined Concrete Cylinders

Evaluation of Ultimate Axial Strain Models for Fiber-Reinforced Polymer-Confined Concrete Cylinders

Providing a model for estimating the compressive strength of square and rectangular columns confined with a variety of fibre-reinforced polymer sheets

Comparison of CFRP and GFRP Wraps on Reducing Seismic Damage of Deficient Reinforced Concrete Structures

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