Research on the track irregularity spectrum of Guangzhou metro
The track irregularity spectrum simultaneously reflects the amplitude and wavelength of track irregularities,providing a basis for the line condition assessment and maintenance.In this article,the measured track irregularity data from the Guangzhou metro OCS-Track inspection vehicle are used for the calculation,analysis,and fitting of the track irregularity spectrum.It is found that the low inspection speed and abnormalities of the accelerometer and laser camera components are the main reasons for abnormal track inspection data,which can be corrected through data preprocessing.There are periodic irregularities in the Guangzhou metro track with wavelengths equal to the length of rail and circumference of the wheel,and there is a strong negative correlation between track alignment irregularities and curve radius.The track irregularity spectrum is used for track quality evaluation,which is a useful complement to the TQI and peak deduction method.This research fills the gap of the track irregularity spectrum of the Guangzhou metro,improves the assessment and maintenance system of the Guangzhou metro line.At the same time,the development of the track irregularity spectrum calculation software is conducive to popularizing the use of the track irregularity spectrum.
万方数据
维普
