ANALYSIS OF VIBRATION REDUCTION EFFECT OF STEEL SPRING FLOATING SLAB TRACK INDUCED BY RANDOM WHEEL-TRACK DYNAMIC EXCITATION

被引：0
|
作者：
Li M.-H. [1 ]
Wang W.-B. [1 ]
Li Z. [2 ]
Wu Z.-Z. [1 ]
Zhang S.-L. [1 ]
机构：
[1] China Academy of Railway Sciences Corporation Limited, Urban Rail Transit Center, Beijing
[2] Beijing Jiaotong University, School of Civil Engineering, Beijing
来源：
Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷
关键词：
metro; steel spring floating slab track; train-induced vibration; vibration mitigation effect; wheel-rail irregularity;
D O I：
10.6052/j.issn.1000-4750.2023.05.S035
中图分类号：
学科分类号：
摘要：
In order to analyze the impact of random wheel-rail irregularity on the vibration reduction effect of steel spring floating slab track (SSFST), the random simulation method is used to study the random characteristics of random wheel irregularity on the evaluation results of insertion loss (IL) of SSFST under different track irregularity states, and the influence of track irregularity development on the evaluation results of IL. The research results indicate that under different track irregularities, the difference of IL on the tunnel wall VLZ,max induced by random wheel irregularity is more than 10 dB discrete, and as the track irregularity develop, the sample mean and standard deviation of the IL of VLZ,max significantly decrease. The statistical results of frequency division IL show that the development of track irregularities has a more significant impact on frequency division IL under 6.3 Hz, and that the impact on the statistical mean of frequencies above 20 Hz is not significant. © 2024 Tsinghua University. All rights reserved.
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页码：292 / 299and345
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