...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Canadian Geotechnical Journal >Evaluating railway track support stiffness from trackside measurements in the absence of wheel load data
【24h】

Evaluating railway track support stiffness from trackside measurements in the absence of wheel load data

机译：在没有车轮载荷数据的情况下，通过轨旁测量评估铁路轨道支撑刚度

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It is generally accepted that track support stiffness is a major factor controlling rates of track geometry deterioration, particularly where the track support stiffness changes abruptly. There is, therefore, considerable potential benefit in being able to quantify and detect changes in the track support stiffness. In recent years, trackside techniques using various types of transducers have been developed to determine track deflections as trains pass. However, deducing the track support stiffness from these measurements requires assumptions to be made concerning train loading and track behaviour, and the possibility of different interpretations remains. For example, loads from moving trains vary dynamically and it is not usually feasible to measure their exact values at any given point along the track. This paper presents new methods of analysis, which can be applied to frequency spectra of track displacement, velocity or acceleration generated as trains pass to calculate the track support stiffness for trains of known axle intervals, without needing to know the actual loads applied. The approach is demonstrated with reference to theory and measured data from a range of field sites.
机译：公认的是，轨道支撑刚度是控制轨道几何形状恶化速率的主要因素，尤其是在轨道支撑刚度突然变化的情况下。因此，能够量化和检测轨道支撑刚度的变化具有巨大的潜在利益。近年来，已经开发出使用各种类型的换能器的轨道侧技术来确定火车经过时的轨道偏斜。但是，从这些测量值推导出轨道支撑刚度需要对列车的载荷和轨道行为做出假设，并且仍然存在不同解释的可能性。例如，行驶中的火车的载荷动态变化，通常在沿轨道的任何给定点测量其精确值通常是不可行的。本文介绍了新的分析方法，该方法可应用于火车通过时产生的轨道位移，速度或加速度的频谱，以计算已知轴距的火车的轨道支撑刚度，而无需知道实际施加的载荷。该方法是参考理论和来自多个现场站点的测量数据进行了演示。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号