Research on influence of metro rail surface short-wave irregularity on vibration damping effect of steel spring floating slab ballast
With the operation time of the metro line prolonging,uneven wear occurs on the rail surface in certain sections,forming the unevenness of the rail with very different wavelengths.The steel spring floating slab ballast has a good vibration damping effect and is used in various metro lines.The steel spring floating slab ballast test section and the ordinary overall track bed test section were selected in the straight section and the curve section respectively to conduct the rail surface short-wave irregularity test and vibration test.The results show that:the vibration damping effect of the steel spring floating slab ballast in the straight section rail surface condition is good and the rail surface short-wave irregularity section is 24.3 dB and 24.4 dB respectively,the vibration damping effect of the steel spring floating slab ballast in the curve section where the rail surface is in good condition and the section where the rail surface is short-wave irregularity is 20.5 dB and 20.3 dB respectively.The short-wave irregularity of the rail surface has little impact on the vibration damping effect of the steel spring floating slab ballast.
metrorail surface short-wave irregularitysteel spring floating slab ballastvibration damping effectfield test
NETL
NSTL
万方数据
维普
