近年来,我国公路、铁路不断发展,铁路、公路的改造往往需要增减或扩建涵洞或立交框构,顶进施工便成了这些工程的首选方案.结合大秦线K337+ 002.5杨雁路地道桥工程同时下穿大秦线上行、下行两股线的工程实践,介绍了采用限速45 km/h铁路框架顶进线路加固施工方法.为以后在同样条件下的地道桥施工积累经验.%With the continuous development of China' s highways and railways in recent years, the transfor mation or expansion of box culvert or overpass structures are often needed in the reconstruction of roads, and jacking is a preferred solution for these projects. This paper describes the use of speed limit 45 km/h railway line reinforcement jacking frame construction method, and provides experience for the future of bridge construction under the same conditions.
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