Analysis on Vibration Reduction Characteristics of Ladder Track Structure on Metro Viaduct under Measured Track Irregularities

Liu, Xiao Zhou; Lian, Song Liang; Wei, Hong

doi:10.4028/www.scientific.net/amm.226-228.406

Cited by 2 publications

(1 citation statement)

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“…The vibration of LS track and the vehicle increased significantly because of the lower vertical support rigidity of LS track when compared with typical slab tracks and the lack of efficient suppression of the upward vibration displacement of the sleeper. 13,14 Rail corrugation, sleeper hanging, sleeper cracking, elastic parts aging, and fastener system damage have all been observed in practical applications, 15,16 and the resonance frequencies of four typical track structures were investigated in References; 17,18 and the results showed that different track structures have varied effects on the geometric features and growth rate of rail corrugation. As for sleeper damping tracks, the initiation and growth of rail corrugation are mainly related to train speed, sleeper support spacing, sleeper mass, and support stiffness, which all play a role in the initiation and growth of rail corrugation on sleeper damping tracks.…”

Section: Introductionmentioning

confidence: 99%

Influence of vibration suppression device for ladder-type sleeper track on vehicle-track system dynamic interaction

Wang

Feng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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The ladder-type sleeper track (LS track) is one of the traditional vibration-attenuating track systems. Based on engineering experience, a vibration suppression device (VSD) for the LS track has been developed to reduce LS track vibration caused by metro trains and improve train running stability. In this work, numerical simulation was used to investigate the effect of essential VSD parameters such as stiffness, damping, and preload on the dynamic responses of the vehicle-LS track system. Firstly, a refined vehicle-LS track coupled dynamics model involving an elaborated model of VSD was developed to investigate the action principle of VSD and the influence of various action methods on LS track vibration suppression. Then, the effects of VSD were thoroughly investigated using the proposed model from the perspectives of vehicle-track dynamic interaction, vehicle dynamics, and LS track’s stability and vibration attenuation capabilities. Finally, the influence tendency of major VSD parameters on vehicle and LS track dynamic performance, as well as the range of VSD parameters engineering feasibility, was explored. The results show that VSD features can affect the vehicle-LS track dynamics performance. VSD not only reduces LS track vibration, but also improves vehicle’s operating stability, and VSD’s influence becomes more substantial with the rise of crucial VSD parameter values.

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