研究目的:针对铁路大提速背景下既有线精细化管理的迫切需要,对以直接测量轨道三维坐标的既有线三维定位测量技术方案、实施方法及存在的问题进行详细的分析与论述,以直接测量轨道三维坐标的方法实现既有线三维精测的技术,把既有线轨道精检细修战略推向三维精测的新阶段。
研究结论:通过分析表明,受测量效率等多种因素影响,基于全站仪的轨道三维定位测量系统仅适用于对既有线进行一次性(或长周期)的线形参数测量。为了解决线路日常检查的需要,拟建立以轨道沿线设置的轨道桩为基准的既有线三维约束测量系统体系,借助类似支距尺的简单工具进行人工测量。为研究高效、经济的既有线三维约束测量系统,并与既有线三维定位测量共同构成一个完整的既有线三维精测数字化解决案提供了理论依据与思路。
Research purposes:Formeeting the urgentdemand of finemanagementofexisting speed-increased railway line, this paper analyzes and discusses the 3D positioning survey 's technology in details, including the implementing scheme andmethod and problems. Using the 3D precise measurement technology to measure the three-dimensional coordinates directly for the existing railway trackwill lead the strategy of"precise inspection and fine repair" ofexisting railway track into a new stage.
Research conclusions:The research shows the three-dimensional survey system based on total station just apples to measuring the primary or long-term parameters, because lots of factors affect themeasuring efficiency. In order tomeet the needs ofdaily inspection ofexisting track, the high-precise digital3D track boundmeasure system based on can be developed togetherwith themaintenance benchmark along the railway, for instance the simple tools like offsetscale can be used formanualmeasuremen.t The research provides theoretical basis and thoughts on developing a complete high efficient andmoney-saving 3D track boundmeasurement system with high efficiency andmoney saving.
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