武广客运专线隧道内悬挂吊柱安装问题探讨

针对武广客运专线区间线间距5m的双线隧道内采用上下行分别进行吊柱悬挂的形式，在施工及准备阶段遇到关于吊柱长度选型及吊柱限界误差确定的技术问题进行了理论分析，并将分析结果应用在施工中，解决了施工难题，对今后客运专线设计、施工有一定指导意义。

Discussion on Installation of Suspension Drop Tube inside of Tunnels on Wuhan-Guangzhou Passenger Dedicated Lines

Toward to that there are drop tubes hanging in both downline and upline in such tunnels in which the distance of the two lines is more than 5 m,in this paper makes theory and practice analysis for several technical issues about the selection of tube length and assurance of the tolerance exist in the MVK of the tube. In the installation of drop tube in catenary system. And it resolve many problems in construction,which has a significance of guidance on the future design and construction of passenger line.