双导梁架桥机在隧道口架设公路T梁中的应用

The Application of Double Guide Beam Bridge Machine in the Project of Erecting Highway T-Beams at the Tunnel Entrance

在山区高速公路施工中,隧道口架设预应力混凝土梁是比较特殊的施工工况。论文以都安T31标三窝隧道出口架设40m预制T梁为例,介绍了架桥机为适应隧道口架梁状况所做的结构改进及受力分析,对架桥机通过隧道及隧道内架梁等方面进行了介绍。

In the construction of mountain highway, the erection of pre-stressed concrete beams at the tunnel entrance is a special construction condition, and this paper takes the 40 m precast T-beam erected at the exit of Sanwo tunnel of Du’an T31 section as an example,and introduces the structural improvement and force analysis done by the bridge machine to adapt to the beam erection condition at tunnel entrance, and also focuses on the bridge machine through the tunnel and girders in tunnel, etc.