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Shayanfar, Sajjad, Ghasemi Naghibdehi, Meysam, Shayanfar, Javad. (1405). Data-Driven Prediction of FRP Confinement Efficiency in Concrete Columns: Incorporating Corner Radius and Aspect Ratio Effects. پژوهشنامه مدیریت اجرایی, 2(3), 1-15. doi: 10.22080/ceas.2026.30750.1059
Sajjad Shayanfar; Meysam Ghasemi Naghibdehi; Javad Shayanfar. "Data-Driven Prediction of FRP Confinement Efficiency in Concrete Columns: Incorporating Corner Radius and Aspect Ratio Effects". پژوهشنامه مدیریت اجرایی, 2, 3, 1405, 1-15. doi: 10.22080/ceas.2026.30750.1059
Shayanfar, Sajjad, Ghasemi Naghibdehi, Meysam, Shayanfar, Javad. (1405). 'Data-Driven Prediction of FRP Confinement Efficiency in Concrete Columns: Incorporating Corner Radius and Aspect Ratio Effects', پژوهشنامه مدیریت اجرایی, 2(3), pp. 1-15. doi: 10.22080/ceas.2026.30750.1059
Shayanfar, Sajjad, Ghasemi Naghibdehi, Meysam, Shayanfar, Javad. Data-Driven Prediction of FRP Confinement Efficiency in Concrete Columns: Incorporating Corner Radius and Aspect Ratio Effects. پژوهشنامه مدیریت اجرایی, 1405; 2(3): 1-15. doi: 10.22080/ceas.2026.30750.1059

Data-Driven Prediction of FRP Confinement Efficiency in Concrete Columns: Incorporating Corner Radius and Aspect Ratio Effects

Civil Engineering and Applied Solutions
دوره 2، شماره 3، مهر 2026، صفحه 1-15    اصل مقاله (907.85 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22080/ceas.2026.30750.1059
نویسندگان
Sajjad Shayanfar1؛ Meysam Ghasemi Naghibdehi1؛ Javad Shayanfar* 2
1Department of Civil Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
2Department of Civil Engineering, University of Minho, Azurém, Guimarães, Portugal
تاریخ دریافت: 19 آذر 1404،  تاریخ بازنگری: 16 دی 1404،  تاریخ پذیرش: 09 بهمن 1404 
چکیده
This study develops a regression-based, design-oriented model for predicting the ultimate axial compressive strength of concrete columns fully confined with fiber-reinforced polymer (FRP) jackets. The model is formulated to be applicable to circular, square, and rectangular cross-sections within a single unified framework. Confinement effectiveness in non-circular sections is explicitly accounted for through two continuous geometric correction factors: one defined by the ratio of corner radius to section dimension and another defined by the cross-sectional aspect ratio. These factors modify the effective lateral confining pressure to reflect the progressive reduction in confinement efficiency as the section deviates from circularity. The model is calibrated and validated using a comprehensive experimental database comprising 1,723 FRP-confined concrete column tests, covering unconfined concrete compressive strengths from 6.6 to 204 MPa, FRP elastic moduli ranging from 13.6 to 657 GPa, and rectangular section aspect ratios up to 2.0. By construction, the formulation satisfies essential physical boundary conditions, including recovery of unconfined concrete strength in the absence of FRP confinement and a smooth, continuous transition in predicted strength between circular and non-circular cross-sections. The proposed model provides a general-purpose and physically consistent tool suitable for the design and assessment of FRP-confined concrete columns with varying cross-sectional geometries.
کلیدواژه‌ها
FRP confinement؛ Compressive strength؛ Predictive model؛ Design-oriented model؛ Confined concrete؛ Non-circularity effect
مراجع
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