大跨度石拱桥的加固改造

Reconstruction of the long span stone arch bridge reinforcement

结合工程实例,通过对大跨度石拱桥的病害调查,分析了其产生的原因,提出三种可行性加固方案,并对方案进行了优选,重点介绍了下套拱加固施工方法,有一定的借鉴作用。

Combined with the engineering, through the damage investigation of the long span stone arch bridge, its cause is analyzed and three feasible schemes of reinforcement are proposed in this paper, then the best scheme is determined. The reinforcement and construction of under origin arch is discussed in the paper. It is useful for reference to select the reinforcement methods.