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为改善锈蚀钢筋混凝土柱的抗震性能,利用碳纤维布与角钢对锈蚀柱进行复合抗震加固.试验共对12根试件进行了低周反复加载试验,研究参量包括钢筋锈蚀程度、轴向荷载、碳纤维布层数和角钢用量.试验结果表明,利用碳纤维布和角钢复合加固锈蚀柱可以显著改善锈蚀柱的承载能力、延性和耗能能力.复合加固后,加固柱的强度和延性与锈蚀柱相比,可分别提高0.9倍和1倍以上.基于试验结果,提出了计算加固构件屈服荷载、最大荷载和位移延性系数的简化公式,计算结果与试验结果极为吻合.
In order to improve the seismic performance of corroded reinforced concrete columns, the composite column was reinforced with carbon fiber cloth and angle steel, and 12 low-cycle cyclic loading tests were carried out. The research parameters included the corrosion degree of steel bars, axial load, carbon fiber The number of cloth layers and the amount of angle steel.The results show that the strength, ductility and ductility of the corroded columns can be significantly improved by using the carbon fiber cloth and the angle steel composite reinforcement corroded columns , Respectively, can be increased by 0.9 times and 1 times respectively.According to the test results, a simplified formula for calculating the yield load, maximum load and displacement ductility coefficient of reinforced members is proposed, and the calculated results are in good agreement with the experimental results.