| The principles of main measures taken by track traffic to decrease vibration were analyzed including the steel spring floating slab track, type Ⅲ rail vibration absorber fastener, and vanguard fastener, and their actual damping effects were tested by field monitoring. The results showed that although three kinds of vibration damping measures could basically control the vibration induced by subway train within the standard limits, the abnormal rail corrugation phenomenon appears in the course, and there are some issues exist that the low frequency damping effect is poor, and the gap between theoretical and practical damping effect is present. |
