摘要
随着无砟轨道的大量应用,其平顺性问题日益凸显。无砟轨道的平顺性测量常采用基于全站仪的绝对测量技术。绝对测量技术是以轨道外部几何尺寸控制轨道内部几何尺寸,故其必然涉及精度衔接问题。本文通过对无砟轨道平顺性指标及绝对测量技术的分析,认为:目前标准中全站仪测角精度要求仅满足平顺性控制的必要条件,要全面满足轨道平顺性控制要求,应当采取相应措施提高测量精度。
With the widespread use of HSR ballastless track, the problem of track roughness control is increasingly looming up before us. In the practice of track maintains, the roughness control of ballastless track usually used the technology of absolute survey which is based on Electronic Total Station （ETS）. Due to the principle of absolute survey which meet the demand of track inner geometry through outer geometry measurements, it is naturally that there is the problem of accuracy uniformity. In this paper, the standard of ballasttless track roughness and the technology of absolute survey has been analyzed. Analysis shows that： current standard about angular accuracy of ETS meets the necessary condition for roughness control. To comprehensively meet the demands of track roughness, counter measure should be adapt to improve the accuracy.
出处
《科技广场》
2012年第9期11-14,共4页
Science Mosaic
关键词
高铁无砟轨道
绝对测量
平顺性
中误差
HSR Ballastless Track
Absolute Survey
Track Roughness
RMSE
