Through the analysis of disease of Baotou City Wi-l ow Bay stone arch bridge, this paper puts forward the reinfo-rcement scheme of inner arch method, the reinforced bridge c-arrying capacity evaluation, and provides reference for reinfor-cement scheme of this kind of bridge reinforcement and recon-struction work.% 本文通过对包头市柳树湾石拱桥的病害情况进行分析，提出内套拱法的加固方案，并对加固后的桥梁承载能力进行评定，加固方案可以为该类桥梁的加固改造工作提供借鉴。
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