The numerical analysis of railway vibration reduction by trenches

Establishing a mechanical model for analyzing railway vibration reduction by trenches this paper uses the universal finite-element software ANSYS to analyze the reduction effect of different characteristics which influence resulting vibration reduction,such as the depth,the width or the location of trenches.It is shown that the depth is the dominating factor and the width or the location of trenches has very little effect on vibration reduction.With the depth increasing,the effect of vibration reduction is improved and furthermore the vibration reduction by trenches is more fit for the high frequency vibration.