道岔区高速动车组车体横向振动特性分析  

Analysis of the carbody’s lateral vibration characteristic of high-speed emus in turnout area

作　　者：解婉茹 刘金朝 赵钢 毛学耕 秦航远 赵一馨 XIE Wanru;LIU Jinzhao;ZHAO Gang;MAO Xuegeng;QIN Hangyuan;ZHAO Yixin(Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081 [2]中国国家铁路集团有限公司铁路基础设施检测中心,北京100081

出　　处：《铁道科学与工程学报》2025年第1期1-12,共12页Journal of Railway Science and Engineering

基　　金：中国铁道科学研究院集团有限公司科研项目重点课题(2022YJ138,2022YJ192)。

摘　　要：高速道岔作为轨道系统关键设备之一,其服役状态直接影响动车组行车安全和乘坐舒适,因此必须对其状态进行长期检测与分析。采用均方根和排列熵分别刻画动车组通过高速道岔时车体位置处的横向振动能量特征和振动序列混乱程度。当车体横向加速度数据中含有异常的局部毛刺成分时计算得到的排列熵值明显异常,在分析异常数据特征基础上提出了基于小尺度滑动标准差和有效零点数的异常车体横向加速度数据识别方法。由于异常成分与正常成分频率存在较大差异,在自适应噪声的完整集合经验模态分解基础上实现了对局部毛刺成分的自动提取和对异常车体横向加速度数据的修正。结果显示修正后数据排列熵值下降明显。以修正后的高速综合检测列车采集到的车体横向加速度数据为研究对象,研究了高速动车组通过主型1/18高速道岔时的车体横向振动特征。车体横向加速度的均方根值均小于0.05g,排列熵值分布范围为0.75~1.00。不同类型道岔引起的动车组车体横向加速度序列混乱程度存在明显差异,有砟道岔引起的车体加速度振动序列混乱程度大于无砟道岔;不同类型道岔车体横向加速度均方根值与排列熵值均呈现集中分布特征,集中分布区域面积略有差异;高均方根值低排列熵值与动车组低频周期性晃动工况对应程度高。High-speed turnouts are key components of the track system,and their service status directly affects the safety and comfort of high-speed EMUs.Therefore,long-term monitoring and analysis of their condition are essential.The root mean square(RMS)value and permutation entropy were utilized to characterize the lateral vibration energy and the chaotic degree of the vibration sequence at the carbody position as high-speed EMUs pass through the turnout.If abnormal local burrs were present in the carbody’s lateral acceleration data,the calculated permutation entropy value would be significantly abnormal.Based on the characteristics of abnormal data,a method for identifying abnormal carbody’s lateral acceleration data using small-scale sliding standard deviation and effective zeros was proposed.Due to the significant frequency difference between abnormal and normal components,automatic extraction of local burr components and correction of abnormal vehicle lateral acceleration data were achieved using the complete ensemble empirical mode decomposition with adaptive noise.The results indicate a significant decrease in the permutation entropy value after data correction.The carbody’s lateral acceleration data,collected by the modified high-speed comprehensive inspection train,serves as the research object to study the lateral vibration characteristics of high-speed EMUs when passing through the main type 1/18 high-speed turnout.The findings are as follows.The RMS value of the carbody’s lateral acceleration is less than 0.05g.The distribution range of the permutation entropy value of the carbody’s lateral acceleration is between 0.75 and 1.00.There is a significant difference in the permutation entropy values corresponding to different types of turnouts.The degree of confusion in the carbody’s lateral acceleration sequence caused by ballasted turnouts is greater than that caused by ballastless turnouts.The RMS value and permutation entropy value of the carbody’s lateral acceleration of the main 1/18 high-speed

关 键 词：高速铁路 高速道岔 过岔性能 横向振动 振动特征 

分 类 号：U216[交通运输工程—道路与铁道工程]