为提高列车运行速度，增强铁路运输的市场竞争力，铁路平交道口需要改为立交形式，为不中断列车运营，需要采用桥涵顶进技术。介绍了大跨度斜交框构桥顶进施工中既有线路加固工艺，以及顶进施工方法、技术措施、预防偏差和纠偏方法。

 In order to increase the running speed of the trains and to strengthen the competibility of the railway transportation system, the level railway crossing junctions are required to be converted into grade junctions. Therefore, jacking of frameshaped culverts is needed so as to avoid the interruptions of the railway system. This paper introduces the technology for the reinforcement of the existing railways, as well as the construction methods, technical measures, deviation prevention methods and deviation correction methods taken during the jacking of the largespan obliquecrossing frameshaped culvert.