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为保障高速铁路建设质量和运营安全,铁路行业规范规定,上道检测轨道的轨道几何状态测量仪需要通过标准轨道检验场进行技术认证。目前国内外关于标准轨道检验场的相关研究成果鲜有报道。本文针对高速铁路无砟轨道每隔50~70 m分段测量模式,提出了顾及非重叠区测点的轨道分段测量数据平顺连接方法,以重叠区轨道点的竖向和横向偏差为测站修正模型的约束条件,分别建立了每个测站的轨道点修正模型,对每个测站所有轨道测点进行了修正,以提高调整后轨道点的精度。在参与标准轨道检验场建设的实践中,采用精密机械量具进行了轨道点的更高精度测量,以比较评价新的分段连接方法和现有方法的测量结果。试验表明,新方法调整后的轨道点不仅保持了现有方法提高重叠区测点精度的优点,而且还能使非重叠区测点的精度提高为现有方法的2.6倍。研究成果对相关技术标准、规范的制定和轨道几何状态测量仪的研发具有参考价值。
In order to ensure the construction quality and operational safety of high-speed railway, the railway industry regulation stipulates that the orbital geometry measuring instrument on orbital testing track needs technical certification through the standard track inspection yard. At present, there are few reports about the related research results of standard orbital inspection field at home and abroad. Aiming at the 50 ~ 70 m section measurement mode of ballastless track of high-speed railway, this paper presents a smooth connection method of track sub-section measurement data taking into account the measurement points of non-overlapping areas. Taking the vertical and horizontal deviation of track points in overlap area as the measuring station The constraints of the model are modified, and the orbital point correction model of each station is established respectively. All the orbital measuring points of each station are modified to improve the accuracy of the orbit. In the practice of participating in the construction of standard track inspection field, more precise measurement of orbital points was carried out by using precision mechanical measuring tools to compare and evaluate the measurement results of the new segment connection method and the existing method. The experimental results show that the new orbit method adjusts the track points not only to maintain the advantages of the existing methods to improve the accuracy of the measuring points in the overlap area, but also to improve the accuracy of measuring points in non-overlapping areas to 2.6 times of the existing methods. The research results have reference value for the development of related technical standards, norms and the development of orbital geometry measuring instrument.