Research on Embedded Track System Vibration Transmission
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 7
Abstract
Objective Embedded tracks have relatively high damping, providing good vibration and noise reduction performance. Therefore, it is necessary to study the vibration reduction mechanism of embedded track system. Method Taking Guangzhou Metro Line 14 as example, static and dynamic vibration tests are conducted on both embedded and conventional fastener-based track systems. Based on the track structure frequency response functions and longitudinal attenuation rates obtained from field tests, the vibration reduction characteristics of embedded track system are analyzed. Result & Conclusion Embedded track system exhibits a distinct operational frequency band in vertical vibration reduction. In most frequency bands, the vibration acceleration amplitude of embedded tracks is smaller than that of conventional fastener-based tracks. When the vibration frequency is between 550 and 1 200 Hz, the polymer damping materials and the elastic pad shock-absorbing systems of embedded tracks exhibit good vibration absorption capabilities in this frequency band. Embedded tracks, like frequency-adjustable rail dampers, have a fixed adjustment frequency band, typically around 400 Hz. Compared to the track structure form by discrete support, the track structure form by continuous support shows better rail vibration attenuation rates in frequency bands above 750 Hz.
Authors and Affiliations
Gang YANG, Yuanpeng HE, Jian HAN, Xinwei LUO, Zhixin ZHANG, Kuang HE
Keywords
Related Articles
- EP ID EP742618
- DOI 10.16037/j.1007-869x.2024.07.034
- Views 32
- Downloads 0
Research on AH-model Vehicle Clearance Based on Dynamics Simulation Calculation
Objective The AH-model vehicle combines the characteristics of A and B type model vehicles. Due to its structural differences from conventional metro vehicles, there are currently no corresponding standards on vehicle cl...
Discrete RBF Adaptive Robust Sliding Mode Network Control Method for High-speed Trains
Objective To achieve reliable control of traction and braking key systems in trains while suppressing the impact of communication delay on train control, a discrete RBF (radial basis function) adaptive robust sliding mod...
Research on Urban Rail Transit Service Quality Evaluation Based on Passenger Demand
Objective Evaluation of urban rail transit service quality based on passenger demand not only promotes service quality improvement and enhances passenger satisfaction with travel, but also contributes to economic and soc...
Research on Embedded Track System Vibration Transmission
Objective Embedded tracks have relatively high damping, providing good vibration and noise reduction performance. Therefore, it is necessary to study the vibration reduction mechanism of embedded track system. Method Tak...
Peacetime and Wartime Integrated Protection Design Scheme for Piston-action Ventilation Shaft in Metro Station
Objective As the designers' understanding of the wartime protection function and transportation function of the metro stations deviates from the current specification, the estimated indispensable time in the design for t...