| 高速铁路随机振动轨道动力响应的概率分析 |
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| 引用本文： | 娄平,赵永超.高速铁路随机振动轨道动力响应的概率分析[J].郑州大学学报(工学版),2010,31(2). |
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| 作者姓名： | 娄平 赵永超 |
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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： | 国家自然科学基金重点资助项目(50938008) |
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| 摘 要： | 视车辆、轨道为一个系统,利用弹性系统动力学总势能不变值原理和形成矩阵的"对号入座"法则建立该系统的竖向振动方程,考虑轨道随机不平顺,得到列车5种运行速度下轨道的随机动力响应.列车每种速度下每次得到的轨道动力响应最大值视为随机变量的一次观察值.计算结果表明:列车每种速度下钢轨和轨道板的位移最大值、加速度最大值、车轮加速度最大值以及轮轨力最大值等随机变量均服从正态分布;随着列车运行速度增加,轮轨力最大值随机变量的均值和轨道动力响应最大值随机变量的均值亦增加.
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| 关 键 词： | 高速铁路 轨道 随机振动 随机不平顺 概率分析 |
Track Dynamic Response Probability Analysis for Random Vibration of High-speed Railway |
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| LOU Ping
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ZHAO Yong-chao.Track Dynamic Response Probability Analysis for Random Vibration of High-speed Railway[J].Journal of Zhengzhou University: Eng Sci,2010,31(2). |
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| Authors: | LOU Ping ZHAO Yong-chao |
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| Affiliation: | LOU Ping,ZHAO Yong-chao (School of Civil Engineering , Architecture,Central South University,Changsha 410075,China) |
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| Abstract: | Vehicle and track are considered as an entire system.The vertical equations of motion for a vehicle-track system are formulated by the principle of total potential energy with stationary value in elastic system dynamics and the set-in right-position rule for formulating matrices.The random irregularity of the rail is considered.The dynamic response of train at five different speed levels excited by the irregularity of track are obtained.The maximum dynamic response of each speed is considered a sample obser... |
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| Keywords: | high-speed railway track random vibration random irregularity probability analysis |
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