[1]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(02):59.
　LOU Ping,ZHAO Yongchao.Track Dynamic Response Probability Analysis for Random Vibration of High—-speed Railway[J].Journal of Zhengzhou University (Engineering Science),2010,31(02):59.
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高速铁路随机振动轨道动力响应的概率分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
31
期数:
2010年02期
页码:
59
栏目:
出版日期:
2010-02-02

文章信息/Info

Title:
Track Dynamic Response Probability Analysis for Random Vibration of High—-speed Railway
作者:
娄平; 赵永超.
中南大学,土木建筑学院,湖南,长沙,410075, 中南大学,土木建筑学院,湖南,长沙,410075
Author(s):
LOU Ping; ZHAO Yongchao
School of Civil Engineering and Architecture，Central South University，Changsha 410075，China
关键词:
高速铁路;  轨道;  随机振动;  随机不平顺;  概率分析
Keywords:
high—speed railway; track; random vibration; random irregularity; probability analysis
文献标志码:
A
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.
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 systemdynamics and the“set—in right—position”rule for formulating matrices．The random irregularity of the rail isconsidered．The dynamic response of train at five different speed levels excited by the irregularity of track areobtained．The maximum dynamic response of each speed is considered asample observations of the randomvariable．The samples are regarded as random variable which is used in the probability analysis．The resultsindicate that the random variables of the maximum displacement and acceleration of rails and track slabs，themaximum wheel acceleration，and the maximum wheel—rail force all fall into normal distribution．With theincrease of train speed，the mean of random variable maximum value of wheel—rail force and the mean of ran·dom variables maximum value of the track dynamic response also increased．

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更新日期/Last Update: 1900-01-01