摘要
客运专线无砟轨道的平面控制网分三级布设,数据处理在施工阶段是采用固定起算数据的分级平差,而后期复测阶段则可采用整体平差。为解决复测数据与施工数据的衔接问题,以最小二乘分解法建立数学模型,推导CPⅡ和CPⅢ网分级平差与整体平差的成果差异。理论分析结果表明,二者之间存在的系统性差异对CPⅡ导线影响显著。该研究可为客运专线的后期复测提供参考。
The horizontal control network is classified into three orders for ballastless track of passenger dedicated railway line. The classified adjustment by fixed initiative data was adopted in construction, and the simultaneous adjustment will be adopted in the repeated survey. In order to link up results of the classified and simultaneous adjustments, the difference of the results and its response equations were deduced based on least - square decomposing algorithm. The theoretic analysis reveals that remarkable systemic difference exists in results of different adjustment methods , especially for traverse network of CP Ⅱ. The study provides some important references for the repeated survey of control network.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2008年第6期53-56,共4页
Journal of Railway Science and Engineering
基金
铁道部建设司工程建设规范科研项目(铁建技字2007第008号)
铁道部科技研究开发计划项目(2008G020-B)
关键词
客运专线无砟轨道
控制网
整体平差
分级平差
ballastless track of passenger dedicated railway line
control network
simultaneous adjustment
classified adjustment
