The power spectral density (PSD) analysis of rail roughness is a key problem. It can directly represent the rail roughness level and provide a high-frequency excitation in the train-track coupled model. As there was no PSD for the metro ballastless track, more than 400 samples of rail unevenness of four typical types of track in Beijing Metro were measured and analysed. Besides, according to the existing research, the power function formula was adopted in this paper and the functional expressions of the four typical types of track of the Beijing Metro roughness spectrum were then proposed by using the classic periodogram method.
PSD Analysis on Rail Roughness for Beijing Metro
13th Asia Pacific Transportation Development Conference ; 2020 ; Shanghai, China (Conference Cancelled)
2020-06-29
Conference paper
Electronic Resource
English
PSD Analysis on Rail Roughness for Beijing Metro
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