高速铁路客运专线无砟轨道测量技术

Survey Techniques for the Ballastless Tracks of the High-Speed Passengers-Oriented Railway

京津城际高速铁路客运专线是中国第一条高速铁路客运专线,采用的是德国无砟轨道博格板技术,其测量精度要求高、技术新,其中GRP测量和博格板精调为本项目的重点和难点。结合现场实际施工,着重阐述了GRP测量的坐标计算、GRP点及定位锥点放样、GRP的平面高程测量平差计算方法,并对轨道板精调测量的步骤与关键技术进行详细介绍,对同类工程有借鉴意义。

The Beijing-Tianjin Inter-municipal Passengers-oriented Railway is the first high-speed passengers-oriented railway in our country,which uses the German techniques of ballastless tracks and the Bogue slabs,in the process of the construction of which the survey precision is very demanding,and the techniques used are very new,among which the GRP survey and the precise alignment of the Bogue slabs are the most difficult points of the project.With the construction of the project as a practical example,the coordinate calculations of the GRP survey,the lay-out of the GRP points and the positioning coning points,and the calculation methods for the average errors of the GRP plane elevation survey are presented in detail in the paper,with greater stress placed on the detailed introduction to the specific steps of and key techniques for the precise alignment of the track slabs.The project may serve as a useful reference for other projects of the same type.