[1]谢伟平,王国波..移动荷载作用下轨道系统的动力特性分析[J].郑州大学学报(工学版),2003,24(01):24-27.[doi:10.3969/j.issn.1671-6833.2003.01.006]
　XIE Weiping,Kingdom Wave.Dynamic characteristics analysis of rail systems under moving loads[J].Journal of Zhengzhou University (Engineering Science),2003,24(01):24-27.[doi:10.3969/j.issn.1671-6833.2003.01.006]

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移动荷载作用下轨道系统的动力特性分析()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

24

期数:

2003年01期

页码:

24-27

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Dynamic characteristics analysis of rail systems under moving loads

作者:

谢伟平; 王国波.

武汉理工大学土木工程与建筑学院,湖北,武汉,430070, 武汉理工大学土木工程与建筑学院,湖北,武汉,430070

Author(s):

XIE Weiping; Kingdom Wave

关键词:

移动荷载;  轨道系统;  谱分析;  动力响应;  离散波数法

Keywords:

moving loads;  rail systems;  spectral analysis;  dynamic response;  Discrete wavenumber method

DOI:

10.3969/j.issn.1671-6833.2003.01.006

文献标志码:

A

摘要:

以移动荷载作用下的轨道系统为研究对象,采用了轨道-枕木-碎石垫层协同分析的方法,将轨道系统简化为弹性地基梁模型,通过反应谱和动力响应的计算,对其动力特性进行了分析.研究结果表明:考虑协同作用时的临界速度比不考虑时协同作用时的有显著的降低,而且随着初始频率的增大,临界速度也在降低;轨道的最大响应总是发生在列车运行到该观测点处(t=0时),而且随土层厚度的增加而增大.

Abstract:

Taking the orbital system under moving load as the research object, the method of track-sleeper-gravel cushion synergy analysis was adopted to simplify the rail system into an elastic foundation beam model, and its dynamic characteristics were analyzed through the calculation of response spectrum and dynamic response. The results show that the critical speed when considering synergy is significantly lower than when not considering synergy, and the critical speed decreases with the increase of the initial frequency. The maximum response of the track always occurs at the observation point (t=0) when the train is running, and it increases with the increase of soil thickness.

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