Abstract：Research purposes: Decay rate(DR)is closely related to the dynamic damping properties of the track， which is used to describe the rail vibration propagation behavior with distance alone the track. Experimental study was conducted to compare DR between Egg system track structure and the standard track form with DTVI2 fastening system. Furthermore，the reasons and control measures of the rail corrugation occurred on Beijing metro were also analyzed.
Research conclusions:(1)The DR of Egg system track structure was higher in the frequency range(f>400 Hz)than which on DTVI2 track structure.(2)The DR on Egg system track structure was less than 0. 1 dB/m in the frequency range of 160-250Hz，implying that the pronounced train/track resonance was not able to be damped in this frequency range，which was identified closely related to a track form specific rail corrugation occurred on the section of Egg system on Beijing metro.(3)Adjusting the rail frequency response behavior to avoid the resonance peak，together with improving the system dynamic damping to suppress the rail vibration，were effective measures to control the abnormal corrugation development. ( 4)The results of the paper can provide references to control the rail corrugation.
孙晓静，张厚贵，刘维宁，吴宗臻，杜林林. 轨道系统钢轨振动衰减率动力测试研究[J]. 铁道工程学报, 2015, 32(7): 34-39.
SUN Xiao-jing，ZHANG Hou-gui，LIU Wei-ning，WU Zong-zhen，DU Lin-lin. Test Research on the Characterizing the Dynamic Damping Behavior of Track Structure. 铁道工程学报, 2015, 32(7): 34-39.
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