摘要
为解决大跨度连续梁、连续钢构、系杆拱等结构物受温度变化及线路振动影响轨道控制网(CPⅢ)变化,进而影响轨道基准点(GRP)平面测量数据处理,该文采用直接提取轨道基准点(GRP)平面观测的CPⅢ坐标数据,建立虚拟测站,形成边角网观测数据,采用自由网平差和约束网平差进行轨道控制网(CPⅢ)数据处理。结合具体测量实践,发现可以极大的提高轨道基准点(GRP)数据处理效率。
In order to solve the influence of temperature change and line vibration on large span continuous cantilever beam bridge ,continuous rigid frame bridge and tie-bar arch bridge structure which effects track control network （CPⅢ） changes, and effects data processing in track reference point （GRP） plane surveying. This paper extracts the CP Ⅲ coordinate data of track reference point （GRP） in surveying plane directly, establishes the virtual station, formats triangular network observation data, and uses the free net adjustment and constraint net adjustment for data processing in track control network （CPⅢ ）. According to practice ,the efficiency of track reference point （GRP） data processing is improve greatly.
出处
《勘察科学技术》
2014年第3期15-17,51,共4页
Site Investigation Science and Technology
