Sensitivity analysis of free vibration characteristics of an in situ railway concrete sleeper to variations of rail pad parameters

被引：108
|
作者：
Kaewunruen, Sakdirat [1 ]
Remennikov, Alex M. [1 ]
机构：
[1] Univ Wollongong, Fac Engn, Sch Civil Min & Environm Engn, Wollongong, NSW 2522, Australia
来源：
JOURNAL OF SOUND AND VIBRATION | 2006年 / 298卷 / 1-2期
关键词：
D O I：
10.1016/j.jsv.2006.05.034
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The vibration of in situ concrete sleepers in a railway track structure is a major factor causing cracking of prestressed concrete sleepers and excessive railway track maintenance cost. Not only does the ballast interact with the sleepers, but the rail pads also take part in affecting their free vibration characteristics. This paper presents a sensitivity analysis of free vibration behaviors of an in situ railway concrete sleeper (standard gauge sleeper), incorporating sleeper/ballast interaction, subjected to the variations of rail pad properties. Through finite element analysis, Timoshenko-beam and spring elements were used in the in situ railway concrete sleeper modeling. This model highlights the influence of rail pad parameters on the free vibration characteristics of in situ sleepers. In addition, information on the first five flexural vibration modes indicates the dynamic performance of railway track when using different types of rail pads, as it plays a vital role in the cracking deterioration of concrete sleepers. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：453 / 461
页数：9
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