| 悬空轨枕对轨道结构动力响应的影响 |
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| 引用本文： | Jabbar·阿里·扎克瑞,夏禾,范俊杰.悬空轨枕对轨道结构动力响应的影响[J].北京交通大学学报(自然科学版),2000,24(1). |
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| 作者姓名： | Jabbar·阿里·扎克瑞 夏禾 范俊杰 |
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| 作者单位： | 北方交通大学土木建筑工程系!北京100044 |
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| 摘 要： | 首先建立了带有悬空轨枕的铁路轨道数学模型,在此基础上推导了车—轨系统运动方程,其中考虑了轮轨非线性接触力引起的非线性问题,然后利用逐步积分法解方程重点分析了悬空轨枕对轨道各个组成部分动力响应的影响,结果表明如果在悬空部分存在轨道不平顺,会引起很大的轨枕加速度和轮轨接触力
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| 关 键 词： | 车—轨相互作用 轨道动力分析 赫兹接触理论 悬空轨枕 轨道不平顺 |
Effects of Unsupported Sleeper on Dynamic Responses of Railway Track |
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| Jabbar Ali ZAKERI,XIA He,FAN Jun jie.Effects of Unsupported Sleeper on Dynamic Responses of Railway Track[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2000,24(1). |
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| Authors: | Jabbar Ali ZAKERI XIA He FAN Jun jie |
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| Abstract: | A mathematical model of railway track with a section of unsupported sleepers is developed. Based on this model, the equations of motions of train track system involving nonlinearity, due to nonlinear contact forces between wheels and rail, are solved by using direct integration method in time domain to obtain nomerical results. Dynamic responses of track components to the hung section excitations are treated. The results show that high acceleration in sleepers and large wheel rail contact forces occur if there are rail corrugations in the hung section. |
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| Keywords: | train track interaction dynamic analysis of railway track Hertzian contact theory unsupported sleeper rail corrugation |
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