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为了研究芳纶布(AFRP)对改善腐蚀混凝土桥梁疲劳性能的效果,试验研究了不同腐蚀率对混凝土梁疲劳性能的影响;并对未加固腐蚀梁和AFRP加固腐蚀梁进行了试验对比,分析了AFRP加固不同腐蚀率钢筋混凝土梁的疲劳特性。结果表明AFRP布能显著提高腐蚀混凝土梁的疲劳寿命;加固中度腐蚀梁的疲劳寿命比其未加固梁提高约10倍,加固重度腐蚀梁的疲劳寿命比中度腐蚀未加固梁提高了20%。
In order to study the effect of aramid fiber (AFRP) on improving the fatigue performance of corroded concrete bridges, the influence of different corrosion rates on the fatigue properties of concrete beams was studied experimentally and compared with those of non-reinforced corroded beams and AFRP corroded beams Fatigue Properties of AFRP Reinforced Concrete Beams with Different Corrosiveness. The results show that the AFRP cloth can significantly improve the fatigue life of corroded concrete beams. The fatigue life of the corroded reinforced concrete beams is about 10 times higher than that of the non-reinforced beams, and the fatigue life of the strengthened corroded beams is 20% .