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首页> 外文期刊>Arabian Journal for Science and Engineering >Investigation of Shear Reinforcement Schemes for RC Deep Beams
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Investigation of Shear Reinforcement Schemes for RC Deep Beams

机译：RC深梁剪切钢筋方案的研究

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The aim of this paper is to experimentally investigate the effect of using alternative shear reinforcement schemes on the shearperformance of deep beams. Seven deep beams were cast with different shear reinforcement configurations. Three deep beamsamples were used as reference and were cast with (1) plain concrete without stirrups, (2) plain concrete with stirrups and (3)steel fiber reinforced concrete without stirrups. The remaining beams were made using two alternative shear reinforcementschemes including inverted U-shape steel angles of 50 mm×50 mm×4 mm and inverted U-shape steel rebars made of2∅16 mm. For each shear reinforcement scheme, two deep beam samples were tested, one made with plain concrete and theother made with steel fiber reinforced concrete. The results showed that the proposed schemes (inverted U-shape made ofangles and steel bars) increased the shear capacity of deep beams by 40.9–75.2% compared to the reference beam withoutshear reinforcement. In addition to improving the post-peak behavior and ductility, the proposed schemes showed equivalentultimate shear resistance compared to the reference deep beam made with closely spaced stirrups. The use of steel fiberreinforced concrete in combination with the inverted U-shape angles and steel bars improved the ultimate shear resistance ofdeep beams and produced a prolonged stable inelastic behavior compared to the reference beam with stirrups. A strut-and-tiemodel was proposed to predict the shear strength of the deep beams, which showed a strong correlation between the predictedand the experimental results.
机译：本文的目的是通过实验研究使用替代剪切钢筋在剪切上的效果深度梁的性能。七梁铸造不同的剪切钢筋配置。三个深梁用作参考样品作为参考，并用（1）普通混凝土铸造，（2）用马镫和（3）的普通混凝土钢纤维钢筋混凝土没有马刺。剩余的梁是使用两个替代剪切钢筋制造的包括倒置U形钢角度的方案，50mm×50mm×4mm和倒的U形钢骨架制成2¼16mm。对于每个剪切增强方案，测试了两个深光束样品，用普通混凝土制成其他采用钢纤维钢筋混凝土制成。结果表明，所提出的方案（倒置U形）与参考光束相比，角度和钢筋（钢筋）增加了40.9-75.2％的深梁的剪切容量剪切钢筋。除了改善后峰值行为和延展性之外，所提出的方案表明了等同的方案与具有紧密间隔的箍筋制造的参考深梁相比，极限剪切电阻。使用钢纤维钢筋混凝土与倒U形角度和钢筋混合改善了极限抗剪切电阻与搅拌器的参考光束相比，深梁并产生延长的稳定性不弹性行为。一个支柱和领带建议模型预测深梁的剪切强度，显示预测之间的强烈相关性和实验结果。

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