Abstract: Taking the process of the reinforcement and protection of a duplicate arch bridge as an example, it is super-posited by Guojiaolong old arch bridge in Shizhu in Chongqing and one modern arch bridge. Common damages and causes are found through investigating and computer model discussion. The reasons of protection are analyzed and methods of bridge reinforcement are provided.

Key words: detection of bridge, causes of damage, model calculation, methods of reinforcement

摘要： 以重庆市石柱县过蛟龙古拱桥与现代新拱桥迭合而成的复式拱桥的加固与保护设计为例,通过现场病害调查、合理计算模型的探讨找出病害所在及病害产生的原因,提出了桥梁加固与保护所采取的方法。

关键词: 桥梁检测, 病害原因, 模型计算, 加固方法