箍筋锈蚀的钢筋混凝土梁抗剪性能研究

摘要

Corrosion is one of the important reasons for the degradation of reinforced concrete structure,especially the reinforced concrete bridge structure in the marine environment.The experiment on which current was applied to accelerate the corrosion of stirrup,was carried out to investigate the shear capacity of reinforced concrete beams with corroded stirrups.The experimental results showed that slight corrosion (less than 10％) has no obvious influence on the failure characteristics of concrete beams,but the bearing capacity of concrete beams is slightly improved.According to the experimental results,the reasons of slight increase of shear bearing capacity of the slightly corroded stirrups are explained.%钢筋锈蚀是导致钢筋混凝土结构性能退化的重要原因之一,特别是处于海洋环境的钢筋混凝土桥梁结构.通过通直流电加速钢筋混凝土梁箍筋锈蚀,并进行箍筋锈蚀后钢筋混凝土梁的抗剪承载力试验.试验结果表明,轻微锈蚀(＜10％)对混凝土梁的破坏特征没有明显影响,而对其承载力略有提高.根据试验结果解释了箍筋轻微锈蚀梁的抗剪承载力略有提高的原因.