400 km/h高速铁路线路长波不平顺敏感波长及控制效果分析  

Analysis on sensitive wavelength and control effect of 400 km/h high-speed railway long-wave irregularity

作　　者：刘星宇 时瑾[1] 梁晨 LIU Xingyu;SHI Jin;LIANG Chen(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;State Key Laboratory for Track Technology of High-speed Railway,Beijing 100081,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081 [3]高速铁路轨道技术国家重点实验室,北京100081

出　　处：《铁道科学与工程学报》2023年第3期762-771,共10页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(52078035);中国国家铁路集团有限公司科技研究开发计划项目(P2021G053)。

摘　　要：随着高速铁路不断发展,400 km/h及以上高速铁路已成为铁路科技创新的重大需求,在更高速度运行条件下将面临着一系列车线动力学问题。为探讨更高速度条件下高速铁路线路长波不平顺敏感波长及线路平顺性管理控制问题,基于车线动力学理论,针对某一高速铁路车型,分别就高低不平顺对车体垂向加速度的影响、轨向不平顺对车体横向加速度的影响进行相干性分析与功率谱密度分析,得到了300~400 km/h速度条件下车体长波不平顺敏感波长;通过轨道静态中点弦实现了对特定速度条件下敏感波长的有效控制并提出对应的中点弦控制标准。综合对比发现:此高速动车组列车在300~400 km/h速度条件下,高低不平顺敏感波长范围为114~147 m,轨向不平顺敏感波长范围为60~79 m;线路长波不平顺对轮轨作用力影响较小,对车体振动加速度影响显著,可以通过静态中点弦测量管理有效控制轨道不平顺敏感波长;在400 km/h速度条件下,高低不平顺推荐采用80 m中点弦进行控制,Ⅰ,Ⅱ和Ⅲ级矢高管理建议值分别为5,11和17 mm;轨向不平顺推荐采用60 m中点弦进行控制,Ⅰ,Ⅱ和Ⅲ级矢高管理建议值分别为4,6和10 mm;在实际线路养护维修中应根据车辆类型、行车条件、线路状况等综合考虑确定不平顺敏感波长范围,并以此制定合理的中点弦控制标准。With the continuous development of high-speed railways,high-speed railway of 400 km/h and above has become a major demand for railway scientific and technological innovation.There are a series of vehicle-line dynamics problems under the conditions of higher speed operating.In order to study the long-wave irregularity sensitive wavelength of train and management of track irregularity at higher speeds,based on the vehicle-track coupling dynamics theory,the influence of longitudinal irregularity on vertical acceleration and track alignment irregularity on lateral acceleration of a certain high-speed railway model were analyzed by coherence analysis and power spectral density analysis.Using this method,the sensitive wavelength of long-wave irregularity at the speed of 300~400 km/h was obtained.The effectiveness of mid-chord offset in controlling the sensitive wavelength at specific driving speed was verified.The corresponding control standard of chord vector height was proposed.The comprehensive comparisons are shown as follows.Under the speed condition of 300~400 km/h,the sensitive wavelength range of track longitudinal irregularity is 114~147 m in the long band,and the sensitive wavelength range of track alignment irregularity is 60~79 m.The long-wave irregularity of the line has little effect on the wheel-rail force,and has a significant impact on the vibration acceleration of the vehicle body,and the track irregularity sensitive wavelength can be effectively controlled through the mid-chord offset management.Under the speed condition of 400 km/h,it is recommended to use 80 m chord for control of longitudinal irregularities,and the recommended values of level Ⅰ,Ⅱ and Ⅲ vector height management are 5,11,and 17 mm respectively.For alignment irregularity,it is recommended to use 60 m chord for control,and the recommended values of level I,II and III vector height management are 4,6 and 10 mm respectively.In the actual line maintenance,the irregularity sensitive wavelength range should be determined according to

关 键 词：高速铁路 相干性分析 敏感波长 弦测控制 

分 类 号：U216.3[交通运输工程—道路与铁道工程]