The Effect of Track Structure Parameter on Receptance of Track System

The receptance characteristics of track system has been predicted with the three dimensional track for high frequency vibration, with this model, the structure parameters of track system affect onreceptance have been discussed. The results show that the stiffness of ballast, sleeper mass, and stiffness of railpad are the main factors affecting on resonance and antiresonance under second resonance frequency. Under thesecond resonance frequency, with the increasing of the stiffness of ballast, stiffness of rail pad and decreasing ofsleeper mass, the resonance and anti-resonance frequency of the track system increase. The dampness of dampness of railpadand ballast gives an effect on amplitude of resonance and anti-resonance of track system. The span of sleepermainly controls the frequency of the second resonance, and the third resonance and anti-resonance. As the spanincreases, these resonances or anti-resonance frequencies will decrease.