Test and analysis of vibration response induced by passenger and freight trains passing curved track section of existing line

被引：0

作者：

Sun X. ^{[1
]}

Ma M. ^{[1
]}

Liu W. ^{[1
]}

Wang W. ^{[2
]}

Jiang B. ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

[2] Urban Rail Transit Center, China Academy of Railway Sciences, Beijing

来源：

Zhongguo Tiedao Kexue/China Railway Science | 2016年 / 37卷 / 03期

关键词：

Curved track; Existing line; Field test; Freight train; Passenger train; Vibration exposure level; Vibration response;

D O I：

10.3969/j.issn.1001-4632.2016.03.11

中图分类号：

学科分类号：

摘要：

In order to study the vibration characteristics of track system and nearby ground vibration induced by passenger and freight trains passing the curved section of existing line, in-situ vibration tests were conducted in a circular curve section of Beijing-Harbin Railway. The results showed that the vibration response on the toe of slope was obviously lower than that of sleeper, which indicated that the vibration energy was markedly attenuated in ballast. The vertical vibration acceleration of track system induced by each wagon was more uniform when passenger train passing. However, when freight train passing, the difference was greater in the vertical vibration acceleration of track system due to the different cargo weight of each wagon in train formation. The difference in the peak value of rail vibration acceleration was even more than 900 m·s-2. In the low frequency range of below 10 Hz, the vibration response of track system and nearby ground induced by freight train passing was greater than that induced by passenger train. Although the values of Z vibration level at nearby ground induced by freight and passenger trains passing had little difference, their vibration exposure levels (VEL) were obviously different. This showed that VEL could reflect more realistically the differences in train load duration and the produced vibration energy when both the freight and passenger trains passing. Therefore, Z vibration level and VEL should be both adopted for evaluating the influence of freight train on environmental vibration. © 2016, Editorial Department of China Railway Science. All right reserved.

引用

页码：75 / 81

页数：6

共 10 条

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