隧道仰拱全幅施工技术

Full-breadth Tunnel Invert Construction Technology

为解决仰拱施工对洞内运输线的施工干扰问题,以不同的洞内运输方式为对象,论述了多跨支墩轨道式仰拱栈桥设计及仰拱施工、单跨钢便梁式仰拱栈桥施工技术,并提出了仰拱施工注意事项,确保了洞内运输线的通畅及施工的正常进行。

Several transportation modes in tunnels are studied in order to eliminate the influence of the invert construction on the transportation lines in tunnels.The design of multi-span buttress rail-bound invert trestle and the corresponding invert construction technology and the design of single-span steel beam invert trestle and the corresponding invert construction technology are presented.In addition,key points of invert construction are proposed.The technologies presented in this paper ensure the smooth transportation and construction in tunnels.