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Influence of end anchorage on shear strengthening of reinforced concrete beams using CFRP composites

机译:终止锚固对CFRP复合材料钢筋混凝土梁剪切强化的影响

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摘要

The article presents an experimental study on the influence of various end anchorage systems on the shear strengthening of reinforced concrete (RC) T-beams using externally bonded fibre reinforced polymer (EB-FRP) composites. Two different end anchorage techniques namely self-end anchorage (SEA) and sandwich anchorage (SWA) were used. This study mainly focussed on evaluating the effectiveness of these anchorages to eliminate the conventional fibre reinforced polymer (FRP) debonding failure. A total of twelve R. C. T-beams with different strengthening techniques using CFRP including control beams were used. The test results show improved shear strength and better energy dissipation over conventional technique; this authenticates the influence of end anchorage and its effectiveness in improving shear resistance. Also, the enhanced FRP strain at failure proves that the anchorage employed improves the efficacy of FRP strengthening in terms of ductility and damage tolerance.
机译:本文介绍了各种末端锚固系统对使用外部粘合纤维增强聚合物(EB-FRP)复合材料的钢筋混凝土(RC)T梁剪切强化的影响的实验研究。 使用了两种不同的端锚机技术即自我锚地锚定(海)和夹层锚定(SWA)。 本研究主要侧重于评估这些锚固的有效性,消除常规纤维增强聚合物(FRP)脱粘失效。 使用使用包括控制梁的CFRP具有不同强化技术的十二次R梁。 测试结果显示出改善的剪切强度和更好的常规技术能量耗散; 这验证了最终锚定的影响及其在提高抗剪切抗性方面的有效性。 此外,在失败的增强型FRP菌株证明,锚固所采用的锚固在延展性和损伤耐受性方面提高了FRP强化的功效。

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