斜桥下穿铁路曲线段顶进方案的研究与实施

Analysis and construction of the jack-in scheme of the curved railway under the skew bridge

根据石家庄市建华北大街下穿铁路专用线地道桥顶进施工的工程实例，介绍了斜交小于45°的铁路小曲线弯道上顶进四孔框架桥的顶进方案技术难点及设计依据，总结了在铁路小半径曲线内顶进多孔分体斜桥的成功经验。

According to the project which is the construction of jack-in scheme of the curved railway under Jianhua road in Shijiazhuang. It introduces the difficulty and design basic of jack-in four-hole framed bridge scheme of the small curved railway whose angle is less-than 45°, and generalizes the success experience in the railway whose angle is small jack-in multiple punching framed bridge scheme.