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Effect of discrete steel fibres on strength and ductility of FRP laminated RC beams
Ain Shams Engineering Journal ( IF 6 ) Pub Date : 2020-12-03 , DOI: 10.1016/j.asej.2020.10.005
S. Syed Ibrahim , S. Kandasamy , S. Pradeepkumar , R. Subash Chandra Bose

Many of the several authors have reported that reinforced concrete (RC) beams strengthened with externally bonded fibre reinforced polymer (FRP) laminates/sheets considerably reduced its ductility due to increase in stiffness that leads to debonding type of failure without adequate prior notice. This study aims to investigate the strength and ductility of glass fibre reinforced polymer (GFRP) laminated RC beams incorporated with different volume fraction (Vf = 0.5, 1.0, and 1.5) of discrete steel fibres. From the experimental evaluations, the role played by the incorporation of steel fibres is found to be effective in enhancing both the strength and ductility of FRP strengthened beams at all level of volume fractions, used in this study. Finite element analysis based full-scale beam models were developed using ANSYS software to model the response of all beams, as well, and the load-deflection behaviour of the models exhibit good agreement with the experimental results.



中文翻译:

离散钢纤维对FRP层合钢筋混凝土梁强度和延性的影响

许多作者报告说,用外部粘合的纤维增强聚合物 (FRP) 层压板/片材加固的钢筋混凝土 (RC) 梁由于刚度增加而显着降低了其延展性,导致在没有充分事先通知的情况下出现脱粘类型的故障。本研究旨在研究不同体积分数 (V f ) 的玻璃纤维增​​强聚合物 (GFRP) 层压钢筋混凝土梁的强度和延展性。 = 0.5、1.0 和 1.5) 的离散钢纤维。从实验评估中发现,加入钢纤维所起的作用可以有效提高本研究中使用的所有体积分数水平的 FRP 加固梁的强度和延展性。使用 ANSYS 软件开发基于有限元分析的全尺寸梁模型来模拟所有梁的响应,并且模型的载荷-挠度行为与实验结果非常吻合。

更新日期:2020-12-03
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