Experimental Study on Dynamic Characteristics of CRTSIII Vibration Reduction Slab Ballastless Track Applied in Station

被引：0
|
作者：
Cai X. [1 ]
Wang Q. [1 ]
Liang Y. [2 ]
Liu M. [1 ]
机构：
[1] School of Civil Engineering, Beijing Jiaotong University, Beijing
[2] China Railway Design Corporation, Tianjin
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2023年 / 43卷 / 05期
关键词：
on-situ operation test; rubber hardness; station vibration; vibration-reduction ballastless track; wheel load drop test;
D O I：
10.16450/j.cnki.issn.1004-6801.2023.05.013
中图分类号：
学科分类号：
摘要：
In order to study the vibration reduction characteristics of CRTSIII vibration reduction slab ballastless track at Xiong'an station of Beijing-Xiong'an intercity railway，three tests are carried out，including rubber material test，axle drop test and field driving test. From the multi-dimensional aspects of theoretical vibration reduction performance，internal vibration distribution law，transmission mechanism inside track，field vibration response of station，and according to rubber hardness，acceleration time-frequency characteristics，vibration insertion loss，station vibration level and other indicators，the mechanism and vibration control effect of CRTSIII vibration reduction slab ballastless track are studied. The results show that the average hardness of the rubber pad used for CRTSIII vibration reduction slab ballastless track is 48.5 at room temperature，and the vibration above 35.65 Hz can be theoretically controlled. When the vibration caused by axle drop is transmitted from top to bottom in the track structure，the high-frequency component decays rapidly. With the distance from the axle drop point，the track vibration first decreases and then increases. Compared with common ballastless track，the vibration insertion loss for base plate of CRTSIII vibration reduction slab ballastless track is close to 10 dB. The CRTSIII vibration reduction slab ballastless track can effectively control the station vibration caused by train passing. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：930 / 937
页数：7
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