Wanyi Liu | Haifeng Li | Yude Xu | Wanqing Zhang | Sihan Yan | Fengyu Li | Junxing Qiu
OPEN ACCESS
To find out the relationship between the track structure parameters and rail corrugation type and put forward a reasonable maintenance threshold for the amplitude of rail corrugation, surveys on rail corrugation by rail static and dynamic tests were carried out on Shanghai Metro recently. Based on the in situ data, the wavelength and amplitude of rail corrugation were calculated and analysed by different categories according to their service conditions. Investigation data and its analysis show that different track structure parameters, such as ballast, fastener, curve radius, etc., can affect the amplitude and wavelength in pretty different ways. In order to know the development trend in rail corrugation, statistical significance on the distribution of amplitude and dynamic data is calculated, the distribution of amplitude at certain wavelengths is figured out, and accordingly a reasonable threshold of the amplitude maintenance is put forward.
in situ tests, maintenance threshold, rail corrugation, subway, track structure
[1] Grassie, S.L. & Kalousek J., Rail corrugation: characteristics, causes, and treatments.Proceedings of the Institution of Mechanical Engineers Part F: Journal of Rail andRapid Transit, 207(16), pp. 57–68, 1993.
[2] Grassie, S.L., Short wavelength rail corrugation: field trials and measuring technology.Wear, 191, pp. 149–160, 1996.
[3] Sato, Y., Matsumoto, A., & Knothe, K., Review on rail corrugation studies. Wear, 253,pp. 130–139, 2002.
[4] Torstensson, P.T. & Nielsen, J.C.O., Monitoring of rail corrugation growth due to irregularwear on a railway metro curve. Wear, 267(1–4), pp. 556–561, 2010.
[5] Wang, G., Chen, G., & Wu, P., Influence of sleeper support stiffness and damping onwear-type rail corrugation on a tight curve (in Chinese). Journal of Vibration and Shock,30(2), pp. 99–103, 2011.
[6] Cao, L., Xu, Y., Zhou, Y. & Zhan, G., Characteristics of passenger evacuation in urbanmass transit (in Chinese). Urban Mass Transit, 13(2), pp. 46–46, 2010.