Resonant bridge detection method by on-board measurement

被引：0
|
作者：
Matsuoka K. [1 ,3 ]
Watanabe T. [2 ,3 ]
Uehan F. [3 ]
机构：
[1] Structural Mechanics Laboratory, Railway Dynamics Division
[2] Track Dynamics Laboratory, Railway Dynamics Division
来源：
Quarterly Report of RTRI (Railway Technical Research Institute) | 2020年 / 61卷 / 02期
关键词：
Car body acceleration; On-board measurement; Railway bridge; Resonance;
D O I：
10.2219/RTRIQR.61.2_133
中图分类号：
学科分类号：
摘要：
Large vibrations due to resonance is a major issue for high-speed railway bridges. In order to efficiently and frequently inspect bridge resonance, this study proposes a detection index, amplification factor, based on the vertical acceleration of the head and tail vehicles of a passing train. Field tests with actual trains and bridges revealed that the amplification factor tends to increase with bridge resonance and the impact factor. In addition, train-bridge dynamic interaction simulation clarified that the correlation of the amplification factor with the impact factor was over 0.9. It also revealed that the amplification factor of a train with short vehicles could be used to detect the potential resonance of bridges. © 2020 Ken-yusha Inc.. All rights reserved.
引用
收藏
页码：133 / 138
页数：5
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