| 提速线路参数对轨道结构振动动力响应分析 |
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| 引用本文： | 张宏亮,谷爱军,马春艳.提速线路参数对轨道结构振动动力响应分析[J].华东交通大学学报,2008,25(1):20-23. |
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| 作者姓名： | 张宏亮 谷爱军 马春艳 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,交通与环境研究所,北京,100044 |
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| 基金项目： | 北京交通大学校基金项目(TJJ02019) |
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| 摘 要： | 建立了移动列车荷载作用下点支承连续弹性粱的轨道结构垂向振动动力学分析模型．针对提速线路，采用动力有限元分析方法。分别讨论并比较了有无钢轨初始不平顺条件下，机车以不同行驶速度通过有刚度突变轨道地段时，轨道结构的动力响应规律．理论分析计算表明，线路初始不平顺和由轨枕失效、暗坑等造成的基础刚度的突变对整个轨道结构的动力响应有着显著影响．
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| 关 键 词： | 轨道振动 提速线路 刚度突变 动力响应 ANSYS |
| 文章编号： | 1005-0523(2008)01-0020-04 |
| 修稿时间： | 2007年9月10日 |
Analysis of Effect of Speed-raised Railway Parameters on Dynamic Vibration Responses to Track Structure |
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| ZHANG Hong-Liang,GU Ai-jun,MA Chun-yan.Analysis of Effect of Speed-raised Railway Parameters on Dynamic Vibration Responses to Track Structure[J].Journal of East China Jiaotong University,2008,25(1):20-23. |
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| Authors: | ZHANG Hong-Liang GU Ai-jun MA Chun-yan |
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| Institution: | ( School of civil Engineering, Beijing Jiaotong University Beijing 100044, China) |
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| Abstract: | A vertical vibration dynamic model including a discrete elastic supported beam under moving loads with its foundation elasticity stiffness abrupt change is established.Aiming at speed-raised railway,dynamic finite element method is adopted in the paper in order to analyze the dynamic responsing regularity of the track structure under the condition of the original irregularities and different velocity of locomotive passing though the track with rigidity abrupt change.The computations show that the track irregularities and rigidity abrupt change caused by failure of fastener and sleepers have notable influence on response to the track structure. |
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| Keywords: | track vibration speed-raised railway rigidity abrupt dynamic response ANSYS |
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