武广高速铁路轨道几何波形演变规律  

Evolution Laws of Track Geometry Waveform of Wuhan-Guangzhou High Speed Railway

作　　者：马帅 刘秀波 陈茁 MA Shuai;LIU Xiubo;CHEN Zhuo(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

出　　处：《铁道建筑》2022年第11期1-5,共5页Railway Engineering

基　　金：中国国家铁路集团有限公司科技研究开发计划(K2020G006)。

摘　　要：武广(武汉—广州)高速铁路运营多年,轨道几何波形及幅值发生较大变化,影响列车高速运行的安全性和舒适性。针对这一问题,本文基于武广高速铁路轨道几何动态检测历史数据,采用谱分析方法对轨道几何幅频特性进行分析,研究了轨道几何周期性特征及幅频演变规律。结果表明:武广高速铁路高低存在简支梁徐变上拱变形引起的波长32 m周期不平顺,轨向存在钢轨焊接不良引起的波长100 m周期不平顺;隧道内轨道平顺状态优于路基和桥梁区段;直线和曲线区段的轨道平顺状态没有明显差异;高低谱随时间呈增大趋势;开通运营5年后桥梁徐变上拱发展速率变慢;轨向谱幅频随时间无显著变化;轨道精调能显著改善轨道平顺状态。Wuhan-Guangzhou high speed railway has been operating for many years,and the geometric waveform and amplitude of the track have changed greatly,affecting the safety and comfort of high speed train operation. To solve this problem,based on the historical data of track geometry dynamic detection of Wuhan-Guangzhou high speed railway,this paper analyzed the amplitude frequency characteristics of track geometry by using spectral analysis method,and studied the periodicity characteristics of track geometry and the amplitude frequency evolution law. The results show that the wavelength 32 m period irregularity caused by creep camber deformation of simply supported beam and the 100 m cycle irregularity caused by poor rail welding exists in the rail alignment. The track smoothness in the tunnel is better than that in the subgrade and bridge sections. There is no obvious difference in track smoothness between straight line and curve sections. The high and low spectra increase with time. After 5 years of operation,the development rate of bridge creep and camber becomes slower. The orbital spectral amplitude frequency has no significant change with time.The track fine adjustment can significantly improve the track smoothness.

关 键 词：高速铁路 轨道几何不平顺 轨道谱 波形 演变规律 

分 类 号：U213.4[交通运输工程—道路与铁道工程]