Parameter Studies of Floating Slab Track on Wheel/rail Rolling Noise Reduction and Vibration Isolation

摘要

In order to reduce vibration generation from metro train ,floating slab track is usually used in environment sensitive areas r of some urban. But some parameter changes for vibration -isolation give rise to wheel/rail rolling noise varied. A model r which could simulate wheel/rail rolling noise and vibration is proposed based on the vehicle -track coupled dynamics theory r and the sound radia — tion theory. Parameter matching of floating slab track on wheel/rail rolling noise and vibration r isolation had been investigated in frequency and time domain. The results demonstrated that reasonable parameter matching of r floating slab track will reduce wheel /rail rolling noise and environment vibra -tion.