CAJ | 학술논문

从功率谱密度、时间样本和动力影响角度，对中国高速铁路无砟轨道不平顺谱进行分析，并与德国高速铁路轨道谱进行比较。结果表明：中国高速铁路无砟轨道高低和方向不平顺谱均明显优于德国高速铁路低干扰轨道谱，更优于其高干扰谱，尤其在10～100 m 波长范围；不同线路状态的中国高速铁路无砟轨道水平和轨距不平顺谱与德国高速铁路水平和轨距不平顺谱在不同波长范围内各有优劣，除90％百分位数谱外，在中长波范围内，中国高速铁路无砟轨道水平和轨距不平顺谱优于德国高速铁路轨道谱；从时间样本来看，中国高速铁路无砟轨道不平顺谱幅值明显小于德国高速铁路低干扰和高干扰轨道谱；相同运营条件下，中国高速铁路无砟轨道不平顺谱对行车动力性能的影响最小，德国高速铁路低干扰轨道谱的影响次之，其高干扰谱的影响最大。由此可见，中国高速铁路无砟轨道几何状态优良，在其不平顺谱激扰作用下，高速车辆运行的轮轨动力学性能优秀。
종공솔보밀도、시간양본화동력영향각도，대중국고속철로무사궤도불평순보진행분석，병여덕국고속철로궤도보진행비교。결과표명：중국고속철로무사궤도고저화방향불평순보균명현우우덕국고속철로저간우궤도보，경우우기고간우보，우기재10～100 m 파장범위；불동선로상태적중국고속철로무사궤도수평화궤거불평순보여덕국고속철로수평화궤거불평순보재불동파장범위내각유우렬，제90％백분위수보외，재중장파범위내，중국고속철로무사궤도수평화궤거불평순보우우덕국고속철로궤도보；종시간양본래간，중국고속철로무사궤도불평순보폭치명현소우덕국고속철로저간우화고간우궤도보；상동운영조건하，중국고속철로무사궤도불평순보대행차동력성능적영향최소，덕국고속철로저간우궤도보적영향차지，기고간우보적영향최대。유차가견，중국고속철로무사궤도궤하상태우량，재기불평순보격우작용하，고속차량운행적륜궤동역학성능우수。
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.