Experimental Study on Rail Corrugation Treatment for Vibration Reduction Tracks in Beijing Subway
To verify the effects of rail damping devices in the rail corrugation treatment for vibration reduction tracks,rail damping devices were added to a ladder-type sleeper track and a steel-spring floating slab track,respectively,in this study.The vibration and trackside noise characteristics of the two vibration-reduction tracks were reported,and the development of rail corrugation was tracked.The results show that the rail damping devices installed on the ladder-type sleeper track can achieve positive effects in vibration and noise reduction in a wide band range,which can reduce rail vibration and trackside noise by 9.7 dB and 11 dB(A),respectively.The rail damping devices installed on the steel-spring floating slab track can reduce rail vibration and trackside noise by 8.3 dB and 3 dB(A),respectively,within their operational frequency range.Long-term tracking tests revealed that the installation of rail damping devices can at least halve the rate of rail corrugation development on vibration reduction tracks.
NETL
NSTL
万方数据
