Modelling and experiment of railway ballast vibrations

Modelling and experiment of railway ballast vibrations
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铁路道碴振动建模与实验

DOI:
10.1016/s0022-460x(03)00186-x
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发表时间:
2004-03
影响因子:
4.7
通讯作者:
J.H. Lin
J.H. Lin
中科院分区:
工程技术2区
文献类型:
--
作者:
W.M. Zhai (翟婉明);K.Y. Wang;J.H. Lin

文献摘要

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道碴振动是引起轨道几何形状变化和轨道维修费用增加的关键因素。目前,对碎石道碴振动的分析和测试方法还没有形成。本文基于枕木向道碴的荷载传递近似符合圆锥分布的假设,建立了道碴振动分析的五参数模型。模型中引入道碴剪切刚度和剪切阻尼的概念,以考虑联锁道碴颗粒的连续性。通过现场实车试验,测量了列车运行时道碴的加速度。理论模拟结果与实测结果吻合较好。因此,建议的道碴振动模型已得到验证。
The vibration of railway ballast is a key factor to cause track geometry change and increase of track maintenance costs. So far the methods for analyzing and testing the vibration of the granular ballast have not been well formed. In this paper, a five-parameter model for analysis of the ballast vibration is established based upon the hypothesis that the load-transmission from a sleeper to the ballast approximately coincides with the cone distribution. The concepts of shear stiffness and shear damping of the ballast are introduced in the model in order to consider the continuity of the interlocking ballast granules. A full-scale field experiment is carried out to measure the ballast acceleration excited by moving trains. Theoretical simulation results agree well with the measured results. Hence the proposed ballast vibration model has been validated.
DOI: 10.1002/(sici)1097-0207(19961230)39:24
发表时间: 1996-12
影响因子: 2.9
作者:
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