城市轨道交通新旧首级平面控制网衔接技术研究

Research on the Connection Technology of the New and Old Plane Control Network of Urban Rail Transit

根据广州市轨道交通2015年建设线路的布局要求对原有轨道交通首级控制网进行扩建。针对扩建的新网与原有旧网之间的衔接问题进行分析,提出了衔接处理原则,经过严密科学的方案设计,并充分利用一系列新技术手段,选取合理起算点对整网实行统一平差,实现了新旧控制网的精密衔接,建设了统一覆盖原有地铁线路和新规划线路的精密控制网。

According to the layout requirements of Guangzhou rail transit construction line in 2015,the original rail traffic control network was expanded.In view of the connection problem between the new network and the old network,this paper puts forward the principle of connection treatment,through a strict scientific scheme design,and the full use of a series of new technical means,select a reasonable starting point to implement unified adjustment to the whole network,realize the precise connection of the new and old control network,a precise control network covering existing subway lines and new planned lines is established.