Abstract: The structural principle，structural effects and engineering application results of fiber reinforced polymer ( FＲP) reinforcement for concrete bridge when the concrete strength classification was deficient were introduced． It was also pointed out that FＲP reinforcement method was a simple and effective way to make such a defective structure into an acceptable one．

Key words: concrete bridge, strength classification, fiber reinforced polymer ( FＲP) , structure reinforcement, bearing capacity; deformation resistance

摘要： 介绍了混凝土桥梁结构因混凝土强度等级不足采用FＲP补强间接提高其强度等级的结构原理、结构效果和 工程应用研究成果，并指出FＲP补强是使混凝土强度等级不足的缺陷结构变为合格结构的简单有效方法。

关键词: 混凝土桥梁, 强度等级, 纤维增强复合材料, 结构补强, 承载能力, 抗变形能力