| 无砟轨道纵向连接形式对列车—板式无砟轨道—路基系统振动特性影响 |
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| 引用本文： | 徐庆元,张旭久,曾志平.无砟轨道纵向连接形式对列车—板式无砟轨道—路基系统振动特性影响[J].中国铁道科学,2010,31(1). |
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| 作者姓名： | 徐庆元 张旭久 曾志平 |
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| 作者单位： | 中南大学土木建筑学院,湖南长沙,410075 |
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| 基金项目： | 中国博士后基金资助项目 |
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| 摘 要： | 运用弹性系统动力学总势能不变值原理及形成矩阵的"对号入座"法则,建立列车—板式无砟轨道—路基的竖向振动方程组,用Matlab编制相应计算程序,并用ANSYS软件验证,分析在随机不平顺激扰下,列车高速运行时板式无砟轨道不同纵向连接形式对列车—板式无砟轨道—路基系统振动特性的影响。研究表明:板式无砟轨道纵向连接形式对车体垂向加速度、钢轨垂向加速度、轮轨垂向力、扣件压力的影响极小,但对板式无砟轨道各部件及路基受力有较大影响,轨道板与底座纵连,可以大大降低轨道板和底座的振动和动应力,无砟轨道动力特性总体较为优良。
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| 关 键 词： | 板式无砟轨道 路基 车辆 耦合 振动特性 |
Influence of the Longitudinal Connection Form of the Ballastless Track on the Vibration Characteristics of Train-Slab Ballastless Track-Subgrade System |
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| XU Qingyuan,ZHANG Xujiu,ZENG Zhiping.Influence of the Longitudinal Connection Form of the Ballastless Track on the Vibration Characteristics of Train-Slab Ballastless Track-Subgrade System[J].China Railway Science,2010,31(1). |
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| Authors: | XU Qingyuan ZHANG Xujiu ZENG Zhiping |
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| Affiliation: | XU Qingyuan,ZHANG Xujiu,ZENG Zhiping(School of Civil Engineering , Architecture,Central South University,Changsha Hunan 410075,China) |
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| Abstract: | The vertical vibration equations of train-slab ballastless track-subgrade system were formulated by using the principle of total potential energy with stationary value in elastic system dynamics and the set-in-right-position rule for formulating matrixes.The corresponding program was developed with the Matlab language,and was verified by the calculation result of Ansys software.With the program,the influence of different longitudinal link modes of the slab ballastless track on the vertical vibration charact... |
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| Keywords: | Slab ballastless track Subgrade Vehicle Coupling Vibration characteristics |
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