Simulated Determination of Accuracy Requirement for Control Points Ⅲ Intersection Networks in High-Speed Railway
-
摘要: 为合理布设CPⅢ网的测量网形,确定CPⅢ网中观测值的必要精度,结合CPⅢ网的标准和改进测量网形,采用边角网间接平差的严密精度估算方法,对CPⅢ网的相对点位精度进行仿真计算,并据此确定了CPⅢ网中观测值的必要测量精度:方向测量精度≤±1,″距离测量精度≤±(1+1×10-6)mm.研究结果对高速铁路测量规范的修订和在建高速铁路CPⅢ网的测量具有重要参考价值.Abstract: To meet the accuracy requirement of relative positioning,it is necessary to perform the further investigation on the form of CPⅢ(control points Ⅲ) control networks and the precision evaluation of observations from field surveying.By combining the standard with the improved forms of CPⅢ control networks,a rigorous method for accuracy estimation based on the parameter adjustment of side-angle measurement network was proposed.A simulated test was performed to investigate the relative accuracy between points,and the necessary precision assessment for field observations was further discussed.The research result shows that the azimuth measurement accuracy of less than ±1″ and the distance measurement accuracy of less than ±(1+1×10-6) mm in a high-speed railway system are respectively required.The research provides a reference for the revision of the present measurement specification for high-speed roadway and the selection of surveying methods for ballastless track.
-
赵国堂.高速铁路无碴轨道结构[M].北京:中国铁道出版社,2006:74-77.[2] 中华人民共和国铁道部.铁建设[2006] 189号客运专线无碴轨道铁路工程测量暂行规定[S].北京:中国铁道出版社,2006.[3] 张忠良,杨友涛,刘成龙.轨道精调中后方交会点三维严密平差方法研究[J].铁道工程学报,2008(5):33-36.ZHANG Zhongliang,YANG Youtao,LIU Chenglong.Study on three-dimensional strict adjustment method of space resection for precise positioning track[J].Journal of Railway Engineering Society,2008(5):33-36.[4] 王鹏,刘成龙,杨希.无碴轨道CPⅢ自由设站边角交会网平差概略坐标计算方法研究[J].铁道勘察,2008(3):26-28.WANG Peng,LIU Chenglong,YANG Xi.Research on calculation methods of preliminary coordinates for adjustment in ballastless track base-piles control points Ⅲ with free-station linear-angular intersection[J].Railway Investigation and Surveying,2008(3):26-28.[5] 苏兴,赵代强,钱振地.长枕埋人式无碴轨道道床板精确控制测量施工技术[J].铁道工程学报,2005(1):98-101.SU Xin,ZHAO Daiqiang,QIAN Zhendi.Construction technique for precise controlling and measuring roadbed slab of long sleeper buried type ballastless track[J].Journal of Railway Engineering Society,2005(1):98-101.[6] 贺挨宽.无碴轨道施工平面控制主要技术标准的研究[J].铁道工程学报,2006(9):27-30.HE Aikuan.Research on the main technical standards of horizontal control for ballasfless track construction[J].Journal of Railway Engineering Society,2006 (9):27 -30.[7] 李毛毛.无砟轨道CPⅢ控制网数据处理方法研究及其软件的集成[D].成都:西南交通大学土木工程学院,2007.[8] 武汉大学测绘学院测量平差学科组.误差理论与测量平差基础[M].武汉:武汉大学出版社,2003:107-115. -
点击查看大图
计量
- 文章访问数: 1310
- HTML全文浏览量: 78
- PDF下载量: 488
- 被引次数: 0
下载: