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动静态轨道不平顺评价差异及动态弦测法特性

杨飞 孙宪夫 谭社会 赵文博 魏子龙

杨飞, 孙宪夫, 谭社会, 赵文博, 魏子龙. 动静态轨道不平顺评价差异及动态弦测法特性[J]. 西南交通大学学报, 2022, 57(6): 1239-1249. doi: 10.3969/j.issn.0258-2724.20210732
引用本文: 杨飞, 孙宪夫, 谭社会, 赵文博, 魏子龙. 动静态轨道不平顺评价差异及动态弦测法特性[J]. 西南交通大学学报, 2022, 57(6): 1239-1249. doi: 10.3969/j.issn.0258-2724.20210732
YANG Fei, SUN Xianfu, TAN Shehui, ZHAO Wenbo, WEI Zilong. Evaluation Difference of Dynamic and Static Track Irregularity and Characteristics of Dynamic Chord Measurement Method[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1239-1249. doi: 10.3969/j.issn.0258-2724.20210732
Citation: YANG Fei, SUN Xianfu, TAN Shehui, ZHAO Wenbo, WEI Zilong. Evaluation Difference of Dynamic and Static Track Irregularity and Characteristics of Dynamic Chord Measurement Method[J]. Journal of Southwest Jiaotong University, 2022, 57(6): 1239-1249. doi: 10.3969/j.issn.0258-2724.20210732

动静态轨道不平顺评价差异及动态弦测法特性

doi: 10.3969/j.issn.0258-2724.20210732
基金项目: 中国国家铁路集团有限公司科技研究计划重大课题(K2019G043)
详细信息
    作者简介:

    杨飞(1985—),男,副研究员,硕士,研究方向为轨道管理,E-mail:13811807268@163.com

  • 中图分类号: U216.3

Evaluation Difference of Dynamic and Static Track Irregularity and Characteristics of Dynamic Chord Measurement Method

  • 摘要:

    中点弦测法能够有效控制影响行车安全性和舒适性的指定波段轨道不平顺,主要用于测量轨道静态不平顺,但其较低的测量效率制约着轨道“状态修”的发展. 针对上述问题,将轨道动态不平顺按中点弦测输出,分析动静态弦测值差异与弦长和不平顺波长的关联关系,提出能够评价轨道动态平顺性的动态弦测法,研究动态不平顺与静态不平顺间的映射关系. 研究结果表明:42 m和70 m动态高通滤波幅值分别与10 m弦和20 m弦测值变化规律相当;当不平顺波长大于70 m时,120 m动态高通滤波幅值与40 m弦测值变化规律基本对应;截止波长为42、70、120 m的轨道动态不平顺,分别与弦长为20、30 ~ 40、30 ~ 60 m的动态弦测波形相关性最优,对应的动态弦测法最大合理弦长分别为20、30、40 m,通过路基和简支梁区段实测数据验证了动态弦测法的适应性;在路基沉降区段,弦长为60 m时,静态弦测值明显朝负方向偏离动态弦测值的处所为沉降点,相邻两侧朝正方向偏离动态弦测值的处所为沉降区段起终点.

     

  • 图 1  惯性基准法原理

    Figure 1.  Principle of inertial reference method

    图 2  基于动态弦测法的轨道高低不平顺测量

    Figure 2.  Track longitudinal level measurements with the dynamic chord method

    图 3  弦测法幅频特性

    Figure 3.  Magnitude characteristic of chord measurement

    图 4  单波余弦型不平顺

    Figure 4.  Irregularity of a singular cosine wave

    图 5  部分典型余弦型不平顺动、静态波形

    Figure 5.  Dynamic and static waveforms of some typical cosine irregularities

    图 6  动、静态不平顺峰值随波长的变化规律

    Figure 6.  Variation of peak values of dynamic and static irregularity with wavelength

    图 7  部分典型余弦型不平顺动态弦对比

    Figure 7.  Comparison of dynamic chords with some typical cosine irregularities

    图 8  动态弦测峰值随波长的变化规律

    Figure 8.  Variation of dynamic chord peak value with wavelength

    图 9  动态弦与原始动态高低不平顺峰值的关系

    Figure 9.  Relationship between dynamic chord and original dynamic longitudinal level peak

    图 10  动态弦与实测动态高低不平顺相关性

    Figure 10.  Correlation between dynamic chord and measured dynamic longitudinal level

    图 11  静态高程偏差

    Figure 11.  Static elevation deviation

    图 12  动静态检测结果对比

    Figure 12.  Comparison of dynamic and static detection results

    图 13  路基区段动态弦测与静态弦测对比

    Figure 13.  Comparison between dynamic and static chord measurements in subgrade section

    图 14  动、静态检测结果对比

    Figure 14.  Comparison of dynamic and static detection results

    图 15  简支梁区段动态弦测与静态弦测对比

    Figure 15.  Comparison between dynamic and static chord measurements in simply supported beam section

    表  1  动态弦测误差

    Table  1.   Dynamic chord measurement error %

    截止波长/m弦长/m
    102030405060
    425.420.039.358.273.283.6
    702.47.716.627.539.351.0
    1202.22.76.010.415.721.8
    下载: 导出CSV

    表  2  动态弦测值与静态弦测值峰值差

    Table  2.   Peak value difference between dynamic chord measurement and static chord measurement mm

    弦长/m截止波长/m动、静态弦测值峰值差
    ABC-1C-2C-3
    10 42 0.2 0.3 0.1 0.4 0.1
    70 0.2 0.2 0.1 0.3 0.1
    120 0.1 0.2 0.1 0.2 0.1
    20 42 0.8 0.8 0.4 1.3 0.6
    70 0.6 0.7 0.4 0.9 0.5
    120 0.4 0.6 0.3 0.6 0.3
    30 42 1.7 1.5 0.5 2.7 1.3
    70 1.2 1.4 0.4 1.9 0.9
    120 0.8 1.2 0.3 1.2 0.6
    40 42 2.8 2.7 1.4 4.5 0.9
    70 2.1 2.6 1.4 3.3 0.7
    120 1.4 2.2 1.2 2.2 0.5
    50 42 4.0 4.1 2.0 6.4 3.0
    70 3.1 4 1.9 4.8 2.6
    120 2.0 3.4 1.7 3.2 1.8
    60 42 5.2 5.6 2.9 7.7 4.0
    70 4.3 5.6 2.7 6.1 3.6
    120 2.9 4.8 2.4 4.0 2.5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-09-14
  • 修回日期:  2021-12-15
  • 网络出版日期:  2022-09-02
  • 刊出日期:  2021-12-16

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