铁道科学与工程学报Issue(4)：715-723,9.
高速铁路无砟轨道不平顺谱的比较分析
Co mparative analysis of power spectru m density of ballastless track irregularities of Chinese high -speed railway
摘要
Abstract
In order to investigate the power spectrum density (PSD)of ballastless track irregularities of Chinese high -speed railway and its dynamic effect,the PSDs of Chinese ballastless track irregularities of different track states were analyzed,in terms of PSD,amplitude of time domain samples and dynamic effect.They were com-pared with the German high -speed railway spectrum.The results show that the PSDs of vertical profile irregular-ity and alignment irregularity of ballastless track of Chinese high -speed railway are better than the low disturb-ance spectrum of German high -speed railway,especially in 10 ~100 m wavelength range,more better than one’s high disturbance spectrum.The track spectra of ballastless track ittegularities of Chinese high -speed rail-way and the German high -speed railway spectrum have their advantages and disadvantages in different wave-length ranges in terms of track cross level and gauge irregularity.It is found that the Chinese high -speed bal-lastless track spectra of cross level and gauge irregularity are superior to those of German in the medium and long wavelength ranges.The Chinese 90% percentile spectrum of gauge irregularity is not good enough than that of German.The amplitudes of time domain samples of Chinese high -speed ballastless track spectra are much smal-ler than those of German high -speed railway low and high disturbance spectra.Compared with the German high-speed railway spectrum,the Chinese high -speed ballastless track spectra has minimal impact on vehicle dy-namic performances.Thus,it can be concluded that the geometrical states of Chinese high -speed ballastlesstrack is excellent,and the high -speed vehicle has good dynamic performances on it.关键词
高速铁路/轨道不平顺/功率谱密度/动力学性能Key words
high -speed railway/track irregularity/power spectrum density(PSD)/dynamic performance分类
交通工程引用本文复制引用
高建敏..高速铁路无砟轨道不平顺谱的比较分析[J].铁道科学与工程学报,2015,(4):715-723,9.基金项目
国家重点基础研究发展计划（973计划）项目（2013CB036205，2013CB036206）；中央高校基本科研业务费专项资金资助项目（2682015CX045）；牵引动力国家重点实验室自主研究项目 （）
