结合蓝烟铁路立交桥施工实例,阐述了桥梁顶升施工方法及操作要点,指出在既有线桥梁改造中,采用桥梁整体同步顶升方案,增大桥下净空,既保证了桥梁结构的使用要求,又节约了投资,满足了桥梁立体交通发展的需要.%In this paper, the construction method and operation key points of the bridge jacking are expounded in the light of the example of the construction of the Lan-Yan railway interchange bridge, point out in the reconstruction of cable bridge, the overall bridgehead lifting scheme is adopted to increase the clearance under the bridge, which not only ensures the use of the bridge structure, but also saves the investment and meets the needs of the development of the three-dimensional traffic.
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