武广高速铁路轨道不平顺谱特征分析  

Characteristic Analysis of Track Irregularity Spectrum of Wuhan-Guangzhou High-Speed Railway

作　　者：李再帏[1] 练松良[2] 

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620 [2]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《郑州大学学报（工学版）》2013年第5期52-55,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(50878158);上海工程技术大学博士启动基金资助项目(校启2013-10);上海市教育委员会085内涵建设资助项目(0852011XKZY12)

摘　　要：以武广高速铁路轨道不平顺检测数据作为样本,对轨道不平顺谱的特征进行分析.首先,对检测数据进行功率谱分析,并与欧洲高速铁路谱进行比较,结果表明:轨道不平顺谱低于欧洲高速铁路轨道不平顺下限谱,但方向不平顺谱值相对较大;其次,利用相干函数对轨道不平顺和车体垂向和水平振动加速度进行相干分析,得出轨道不平顺不利波长范围;最后计算轨道不平顺的Hilbert时频谱,得出长波不平顺为高低不平顺和水平不平顺能量的主要波长成分,而中长波不平顺为方向不平顺和轨距不平顺的主要波长成分.According to the track geometry data collected by track recording vehicles from Wuhan-Guangzhou high-speed railway, the characteristic of track irregularity is analyzed. Firstly, power spectral density is calcu- lated with Matlab program, and compared with European high-speed spectra of high irregularity and low irregu- larity. The statistic and analysis result indicates that the track irregularity spectrum values of Wuhan-Guang- zhou high-speed railway are close to European high-speed spectra of low irregularity except for some wave- length bands of track alignment irregularity spectrum values; this indicates that the track status of Wuhan- Guangzhou high-speed railway is better. Furthermore, the coherence functions are utilized to analyze the rela- tionship between track irregularities and vertical/lateral car body vibration accelerations. The range of detri- mental track irregularity wavelengths is larger than the common railroad. Finally, track irregularity is calculated. The result shows that there are medium wave and Wuhan-Guangzhou high-speed railway. Hilbert marginal spectrum of long wave track irregularity in

关 键 词：铁路轨道 不平顺 功率谱密度 相干分析 时频分析 

分 类 号：U213.313[交通运输工程—道路与铁道工程]