基于动静态检测数据的轨道弹性状态评估及平顺性调整方法  

Method for Track Elastic State Evaluation and Smoothness Adjustment Based on Dynamic and Static Detection Data

作　　者：杨飞 孙宪夫 魏子龙 柯在田 赵文博 董杰 YANG Fei;SUN Xianfu;WEI Zilong;KE Zaitian;ZHAO Wenbo;DONG Jie(Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Jining Track Division,China Railway Hohhot Group Co.,Ltd.,Ulanqab 012000,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]中国铁路呼和浩特局集团有限公司集宁工务段,内蒙古乌兰察布012000

出　　处：《铁道学报》2023年第5期82-90,共9页Journal of the China Railway Society

基　　金：中国国家铁路集团有限公司科技研究开发计划(P2020T001)。

摘　　要：轨道刚度检测是识别轨道弹性不良区段,评估轨道、桥梁和路基等结构动力性能的关键技术之一。为解决现有轨道弹性状态检测方法在检测效率与检测投入之间的不平衡,基于周期性动静态检测数据,提出基于动静态轨道几何不平顺差异的轨道弹性状态检测方法。此外,为解决弹性不良区段静态调整与有载不平顺不匹配问题,充分发挥动态检测数据的作用,提出基于动态数据的轨道弹性不良区段平顺性调整方法。通过刚度加载车试验和现场复核验证基于动静态高低不平顺峰值差来评判轨道弹性状态的有效性,在分析11条典型有砟轨道线路的动静态高低不平顺差异特征的基础上,提出动静态高低不平顺差超过2 mm的区段即可以判定存在轨道弹性不良病害。基于某条弹性不良线路区段的动态检测数据,采用本文提出的平顺性调整方法指导人工起道作业,结果表明动态高低不平顺幅值和标准差分别降低42%、51%,波长为32 m的周期性不平顺特征也得到明显改善。Track stiffness detection is one of the key technologies to identify the poor elastic section of track and evaluate the dynamic performance of structures such as track,bridge,subgrade.In order to solve the imbalance between detection efficiency and detection investment of existing track elastic state detection methods,based on the periodic dynamic and static test data,this paper proposed a track elastic state detection method based on the difference of dynamic and static track geometric irregularities.In addition,to solve the mismatch between static adjustment and irregularity with loads in the elastic poor section,and make the best use of the dynamic detection data,an adjustment method for track smoothness in poor elastic section based on dynamic data was proposed.The effectiveness of evaluating the track elastic state based on the peak value difference of dynamic and static irregularities was verified by track loading vehicle and on-site inspection.Based on the analysis of the difference characteristics of the dynamic and static longitudinal irregularities of 11 typical ballasted track railways,it is proposed that the section with the difference of the dynamic and static longitudinal irregularities exceeding more than 2 mm can be judged to have poor track elasticity.Based on the dynamic detection data of a railway line section with poor elasticity,the method of track smoothness adjustment proposed in this paper was used to guide the manual track lifting operation.The results show that the amplitude and standard deviation of the dynamic irregularity are reduced by 42%and 51%respectively,while the periodic irregularity with 32 m wavelength is also reduced significantly.

关 键 词：有砟轨道 轨道刚度 动静态 轨道检测 整道 

分 类 号：U216.3[交通运输工程—道路与铁道工程]