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Structural Engineering and Mechanics Volume 90, Number 1, April10 2024 , pages 71-81 DOI: https://doi.org/10.12989/sem.2024.90.1.071 |
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Performance of headed FRP bar reinforced concrete Beam-Column Joint |
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Md. Muslim Ansari and Ajay Chourasia
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| Abstract | ||
| Fiber Reinforced Polymer (FRP) bars have now been widely adopted as an alternative to traditional steel reinforcements in infrastructure and civil industries worldwide due variety of merits. This paper presents a numerical methodology to investigate FRP bar-reinforced beam-column joint behavior under quasi-static loading. The proposed numerical model is validated with test results considering load-deflection behavior, damage pattern at beam-column joint, and strain variation in reinforcements, wherein the results are in agreement. The numerical model is subsequently employed for parametric investigation to enhance the end-span beam-column joint performance using different joint reinforcement systems. To reduce the manufacturing issue of bend in the FRP bar, the headed FRP bar is employed in a beam-column joint, and performance was investigated at different column axial loads. Headed bar-reinforced beam-column joints show better performance as compared to beam-column joints having an L-bar in terms of concrete damage, load-carrying capacity, and joint shear strength. The applicability and efficiency of FRP bars at different story heights have also been investigated with varying column axial loads. | ||
| Key Words | ||
| Beam-Column Joint; End Span Joint; FE analysis; GFRP bar; headed bar; RC structure | ||
| Address | ||
| Md. Muslim Ansari and Ajay Chourasia: Structural Engineering, CSIR- Central Building Research Institute, Roorkee, 247667, India | ||