Combining with the erection process of the 64 m steel truss along Beijing-Shijiazhuang special line, the paper mainly introduces the working principle, the construction craft and the operation points for the incremental launching method construction, and illustrates the key precautions in the incremental launching process, so as to direct similar projects.%结合京石客专的64 m钢桁梁的架设过程,详细介绍了顶推法施工的工作原理、施工工艺及操作要点,并对顶推过程中的关键注意事项进行了具体阐述,对同类工程有很大的指导意义。
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