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首页> 外文期刊>Structural concrete >Shear behavior of concrete beams reinforced exclusively with longitudinal glass fiber reinforced polymer bars: Experimental research
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Shear behavior of concrete beams reinforced exclusively with longitudinal glass fiber reinforced polymer bars: Experimental research

机译：仅用纵向玻璃纤维增​​强聚合物棒增强混凝土梁的抗剪性能：试验研究

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摘要

This paper aims to investigate the shear failure mechanisms in beams exclusively reinforced with longitudinal glass fiber reinforced polymer bars and to propose a design-based approach to predict the shear capacity of this type of beams. An experimental program composed of seven T cross section shaped concrete beams was executed to analyze the influence of the flexural reinforcement configuration on the shear capacity and deformability of the beams. Three values of the flexural reinforcement ratio ((l)), 1%, 1.4%, and 1.80% were adopted. Digital image correlation technique was used to better capture and analyze the cracking process up to the formation of the shear failure crack. Test results indicated that the shear capacity was not dependent of (l) up to a limit of around 1.4%, but a tendency of the shear capacity to increase with (l) was registered above this limit due to a more pronounced favorable contribution of aggregate interlock and dowel effect.
机译：本文旨在研究仅用纵向玻璃纤维增​​强聚合物棒增强的梁的剪切破坏机理，并提出一种基于设计的方法来预测此类梁的剪切能力。进行了一个由七个T形截面混凝土梁组成的试验程序，以分析抗弯钢筋构造对梁的抗剪承载力和可变形性的影响。弯曲增强率（（1））的三个值分别为1％，1.4％和1.80％。数字图像相关技术被用来更好地捕获和分析开裂过程直至剪切破坏裂缝的形成。试验结果表明，抗剪强度不依赖于（l）直至约1.4％的极限，但是由于（在）该极限以上，抗剪强度随（l）的增加而增加的趋势被记录，这是由于骨料的更明显的有利贡献互锁和销钉效果。

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