Fastening system is a key factor of which affect the vibration characteristics of track, for soft rail the sleepers or track plates are well isolated from rail vibration ,but the virbration decay rate become smaller.Conversely,for stiff rail the rail vibration is restricted by the coupling to the sleepers or track plates but the sleeper or track plate vibration is greater.Based on this, the suitable stiffness of the fastening is taken by the wheel-rail coupling dynamics theory.And then vibration damping fastener samples is designed according to the design specifications of railway track, and the following fatigue and dynamic characteristics lab tests showed that: the loss of static stiffness after fatigue test is 1.2kN/mm, the loss of clamping force is 1.67kN,the loss of longitudinal resistance is 1.6kN, fastening system is designed rationally, assembled fatigue properties is qualified; under vertical and lateral excitation, in 0~5000HZ band, the damping effects of vibration fasteners on the rail head, rail foot and rail waist is very significant.
Zhao Caiyou;Wang Ping;Zhu Ying;Zhao Weihua;Xiao Jieling .
Theoretical Analysis and Experimental Study on vibration damping fastening[J]. Journal of Vibration and Shock, 2012, 31(23): 191-196
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