| 有砟轨道动刚度特性及影响因素分析 |
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| 引用本文： | 方宜,李成辉,马娜.有砟轨道动刚度特性及影响因素分析[J].路基工程,2010,0(4):20-22. |
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| 作者姓名： | 方宜 李成辉 马娜 |
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| 作者单位： | 西南交通大学土木工程学院, 成都610031 |
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| 摘 要： | 应用轨道结构的动力学频域分析方法，研究了有砟轨道的动刚度特性及轨道参数对它的影响。有砟轨道动刚度随频率变化幅度很大，在激振频率为72 Hz时达到最小值55 kN/mm，约为静刚度的60 %。扣件刚度、扣件阻尼、轨枕类型、道床弹性模量对有砟轨道动刚度都有影响。
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| 关 键 词： | 轨道动刚度 频域分析 影响因素 |
| 收稿时间： | 2019-11-12 |
Analysis on Dynamic Rigidity of Ballasted Track and Its Influencing Factors |
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| Authors: | FANG Yi LI Cheng-hui MA Na |
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| Institution: | (School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Through dynamic frequency domain analysis of track structure,dynamic rigidity of ballasted track and its influence by track parameters are studied.Ballasted track dynamic rigidity changes largely with the change of frequency.It reaches the minimum 55 kN/mm when excited frequency is 72Hz,about 60% of static rigidity.Fastener rigidity,damping,sleeper type and ballast elastic modulus all have an effect on ballasted track dynamic rigidity. |
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| Keywords: | track dynamic rigidity frequency domain analysis influencing factors |
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