The invention discloses a track short wave irregularity spectrum fitting method and device. The method comprises the following steps: acquiring track surface roughness test data of a ballastless track high-speed rail line; performing power spectrum characteristic analysis on the track surface roughness test data, and determining a mean value spectrum, an upper limit spectrum and a lower limit spectrum of a track short wave irregularity spectrum; performing piecewise linear fitting processing on the mean value spectrum according to the determined piecewise characteristics of the track short-wave irregularity spectrum to obtain a first fitting formula of the track short-wave irregularity spectrum; according to the upper limit spectrum and the lower limit spectrum, performing supplementary fitting processing on the first fitting formula to obtain a second fitting formula of the track short wave irregularity spectrum; the supplementary fitting processing is used for describing the upper and lower boundary levels of the rail surface short wave irregularity spectrum. According to the method, segmentation fitting of the rail surface short wave irregularity mean value spectrum can be realized, the evaluation efficiency and accuracy of the rail irregularity state are improved, and the evaluation of the geometric state of the high-speed rail is perfected.
本发明公开了一种轨道短波不平顺谱拟合方法及装置,该方法包括:获取无砟轨道高铁线路的轨面粗糙度测试数据;对所述轨面粗糙度测试数据,进行功率谱特征分析,确定轨道短波不平顺谱的均值谱、上限谱和下限谱;根据确定的轨道短波不平顺谱的分段特征,对所述均值谱进行分段线性拟合处理,得到轨道短波不平顺谱的第一拟合公式;根据所述上限谱和上限谱,对所述第一拟合公式,进行补充拟合处理,得到轨道短波不平顺谱的第二拟合公式;所述补充拟合处理用于描述轨面短波不平顺谱的上下边界水平。本发明可实现对轨面短波不平顺均值谱的分段拟合,提升对轨道不平顺状态的评定效率和准确率,完善了对高速轨道几何状态的评价。
Track short wave irregularity spectrum fitting method and device
轨道短波不平顺谱拟合方法及装置
2022-11-22
Patent
Electronic Resource
Chinese
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