青弋江特大桥CPIII控制网测量技术

CPIII Control Network Measurement Technology of Qingyijiang Bridge

CPIII控制网是高速铁路测量最基本的控制网,在高速铁路修建过程中,从无砟轨道的混凝土底座测量放样、道床板精调到长轨精调都要用到CPIII控制网,CPIII控制网在高铁施工中显得极为重要,是实现高速铁路"高、平、顺"的眼睛。本文结合合福铁路五标青弋江特大桥的CPIII控制网测量实例,介绍了CPIII控制网测量及CPIII建网前的CPII及二等水准加密测量的方法。

CPIII control network is the basic control network for high-speed railway measurement. It's used in measuring stake of concrete base,fine adjustment of track bed slab and fine adjustment of long rail during the construction process of ballastless track. In this paper,CPIII control network,CPII encryption measurement and two-grade-leveling encryption measurement of Qingyijiang Bridge are introduced.