| 列车通过轨道不平顺和刚度突变时对轨道振动的影响 |
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| 引用本文： | 雷晓燕. 列车通过轨道不平顺和刚度突变时对轨道振动的影响[J]. 铁道科学与工程学报, 2005, 2(6): 1-8 |
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| 作者姓名： | 雷晓燕 |
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| 作者单位： | 华东交通大学,土建学院,江西,南昌,330013 |
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| 基金项目： | 中国科学院资助项目;江西省自然科学基金;江西省跨世纪学术和技术带头人培养计划 |
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| 摘 要： | 通过建立轨道振动微分方程，推导了单轮作用下考虑轨道不平顺和轨道基础刚度突变的轨道变形解析表达式。利用该解析解和叠加原理，研究了轨道不平顺和轨道刚度突变对轨道振动的影响，分析了单轮对和TGV高速动车通过不同的轨道不平顺和4种轨道刚度比时的轨道动力响应。计算表明，轨道不平顺和轨道刚度突变对轨道振动有较大影响，其影响随着轨道不平顺振幅、刚度比和列车速度的增加而增加。
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| 关 键 词： | 轨道振动 轨道基础刚度 刚度突变 轨道不平顺 轨道过渡段 |
| 文章编号： | 1672-7029(2005)06-0001-08 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2005-08-25 |
Influences of the train on track vibration when passing through the railway with irregularities and rigidity abrupt change |
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| LEI Xiao-yan. Influences of the train on track vibration when passing through the railway with irregularities and rigidity abrupt change[J]. Journal of Railway Science and Engineering, 2005, 2(6): 1-8 |
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| Authors: | LEI Xiao-yan |
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| Affiliation: | School of Civil Engineering, East China Jiaotong University, Nanchang 330013, China |
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| Abstract: | Analytical deformation formula for moving load passing through the track with irregularities and rigidity abrupt change has been derived by establishing the vibration differential equation of the track. The influences of the track irregularities and the track rigidity abrupt change on track vibration is investigated and the dynamic responses of the track under a single wheel and a TGV high speed locomotive passing through the track with different track irregu- larities and four kinds of the rigidity ratios are analyzed by using this formula and the superposition principle. The computations show that the track irregularities and the track rigidity abrupt change have [greater influences on track vibration. This influences increase with increases of the amplitude of the track irregularities, the rigidity ratio and the train speed. |
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| Keywords: | track vibration track foundation rigidity rigidity abrupt change track irregularity track transition |
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