京津城际铁路博格板式无砟轨道不平顺分析  

Analysis of Bogl slab track irregularity of Beijing-Tianjin intercity high speed railway

作　　者：金守华[1] 曾志平[2] 

机构地区：[1]中国铁建股份有限公司,北京100855 [2]中南大学土木工程博士后流动站,湖南长沙410075

出　　处：《铁道科学与工程学报》2009年第1期48-52,共5页Journal of Railway Science and Engineering

基　　金：铁道部科技开发计划项目(2007G044-O-2);中国博士后科研基金资助项目(20080440993)

摘　　要：以轨检车实测京津城际铁路轨道不平顺的数据为统计样本，基于样本平稳性检验，采用快速傅里叶变换方法进行样本空间的谱估计，并由MATLAB编程得到轨道不平顺功率谱密度；将样本等分为12个数据块，分析其高低和水平不平顺的相关性。研究结果表明，轨距、方向、高低不平顺中1．1-1．5m的周期成分较为明显；轨距、水平、方向、高低不平顺中3m左右的周期成分非常明显；方向不平顺中5m、高低不平顺中6m左右的周期成分比较明显；方向不平顺在50m左右波长范围内存在明显周期性；轨距、方向、高低不平顺功率谱密度总体水平与德国高干扰轨道谱的接近；左右两轨高低不平顺控制很好，左右两轨方向不平顺在个别地段有待改善。The statistic specimen used was collected by track geometry inspection car from Bogl slab track of Beijing- Tianjin intercity high speed railway. Based on the stationary test of the specimen, fast fourier transform （FFT） method was used to evaluate the spectrum of the whole specimen space. The power spectrum density （PSD） was obtained by MATLAB program. The specimen is equally divided into twelve parts. The coefficients of track profile irregularity and track alignment irregularity were analyzed. The results show that the 1.1 - 1.5 m periodic waves in rail gauge irregularity, track alignment irregularity and track profile irregularity are obvious. The 3 m periodic waves in rail gauge irregularity, track cross level irregularity, track alignment irregularity and track profile irregularity are very apparent. The 5 m periodic waves in track alignment irregularity and 6 m periodic waves in track profile irregularity are remarkable. There exist obviously 50 m periodic waves in track alignment irregularity. The track PSD of rail gauge irregularity, track alignment irregularity, track profile irregularity is similar to that of Germany high interference. The left rail profile irregularity and right rail profile irregularity are controlled very well, but the left rail alignment irregularity and right rail alignment irregularity still need to be improved in some sections.

关 键 词：京津城际铁路 博格板式 轨道不平顺 功率谱密度 

分 类 号：U213.2[交通运输工程—道路与铁道工程]