摘要
为改进基于CPⅢ轨道控制网测量技术的地铁无砟轨道几何形位精调的测量精度与效率,提出一种基于三维坐标测量轨道几何形位的方法。通过对轨道几何形位检测点进行三维坐标测量,以轨道控制网CPⅢ点作为测量基准点,采用轨道几何形位与检测点的三维解析几何关系,建立三维坐标测量轨道几何形位的计算模型。现场无砟轨道试验段的测试结果表明,三维坐标测量可有效对轨道几何形位进行测量,测量精度满足规范要求的无砟轨道几何形位测量精度指标。
improve the accuracy and efficiency of ballastless track geometry fine tuning based on CPⅢ, a 3D coordinate measurement is presented for static detection of track ge- ometry. The 3D coordinate measurement is carried out by the shape and position detection points on track geometry, and the track control network CPⅢ is taken as the meas- urement reference point. Then, the 3D geometric relation- ship of track geometry and the detection points are used to establish the computational model of 3D coordinate meas- urement track geometry. The testing results in track geom- etry measurement show that the 3D coordinate measure- ment can effectively detect the track geometry, the meas- urement accuracy can meet the requirements of precise in- dicators for ballastless track geometry.
作者
黎桂
何越磊
LI Gui HE Yuelei
出处
《城市轨道交通研究》
北大核心
2017年第1期15-18,共4页
Urban Mass Transit
基金
上海市科学技术委员会地方院校能力建设项目(14110501300)
上海市研究生教育创新计划学位点引导布局与建设培育项目(13sc002)
关键词
地铁
轨道几何形位
三维坐标测量
计算模型
metro
track geometry
3D coordinate meas- urement
calculation model
