铁道科学与工程学报2016，Vol.13Issue(12)：2319-2326,8.
高速无砟轨道扭曲不平顺谱统计分析
Statistical analysis on torsion irregularity spectru m of ballastless track for high-speed railways
摘要
Abstract
According to track geometry data measured from Shanghai-Beijing and Harbin-Dalian high-speed railways,the torsion irregularity spectrums of high speed railways were statistically analyzed from the perspective of power spectrum density (PSD),fitting model,simulation parameters and time domain samples.The results show that the characteristics of torsion irregularity of high-speed railway were related to the type of track slab. The simulation results in time domain of torsion irregularities agree well with the measured values as well as the simulation results infrequency domain by selecting the appropriate simulation parameters and fitting model,which can also embody the torsion irregularity character of high-speed railway ballastless track.The simulation ampli-tude of time domain samples will increase with the increasing of percentile spectrum of torsion irregularity.There-by,it can be concluded that the influence of torsion irregularity researched on high-speed train as well as track structure should based on different percentile spectrum of torsion irregularity,which was provided as the excitingvibration source for vibration analysis of high-speed train and bridge (track)time-variant system on the basis of different geometrical states of high-speed railway.关键词
高速铁路/无砟轨道/功率谱密度/扭曲不平顺/统计分析Key words
high-speed railway/ballastless track/power spectral density (PSD )/torsion irregularity/statistical analysis分类
交通工程引用本文复制引用
余翠英,向俊,陈涛,龚凯,毛建红..高速无砟轨道扭曲不平顺谱统计分析[J].铁道科学与工程学报,2016,13(12):2319-2326,8.基金项目
国家自然科学基金委员会与神华集团有限公司联合资助项目（U1261113）；高等学校博士学科点专项科研基金资助项目（20100162110022）；牵引动力国家重点实验室开放课题资助项目（TPL0901，TPL1214）；江西省青年科学基金资助项目（20142BAB216003）；江西省教育厅科技资助项目 （）
