Power Flow Analysis Of Vibration Isolation System On Track Structure

The vibration and noise in urban rail transit is increasingly brought into focus in recent twenty years.In this paper, firstly, a detailed review of some methods and measures of controlling vibration and noise of the urban rail transit at home and abroad is present. Emphasis is laid on the application of elastic levels of isolation and floating slab track.In this paper, starting from power flow of vibration, the model of power flow transmitting through rail pads—sleeper pads—ballast mats is developed. On the basis of substructure analysis on track structure, four-end parameter method is adopted to analyze the power flow of multi-staged isolation system of track structure. The power flow of track structure is simulated using the software—MATLAB and the influence of system parameters on track structure is discussed.In this paper, the model of power flow transmitting through rail—floating slab— foundation is developed. By analyzing the power flow transmitting to the foundation, the detailed discussion on how the track structure parameters affect power flow of track structure is performed.