[1]徐金辉,许晨霄,冯青松,等.基于惯性基准法的短波不平顺影响因素研究[J].深圳大学学报理工版,2021,38(4):347-357.[doi:10.3724/SP.J.1249.2021.04347]
 XU Jinhui,XU Chenxiao,FENG Qingsong,et al.Influence factors of short-wave irregularity based on inertial reference method[J].Journal of Shenzhen University Science and Engineering,2021,38(4):347-357.[doi:10.3724/SP.J.1249.2021.04347]
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基于惯性基准法的短波不平顺影响因素研究
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第38卷
期数:
2021年第4期
页码:
347-357
栏目:
交通物流
出版日期:
2021-07-10

文章信息/Info

Title:
Influence factors of short-wave irregularity based on inertial reference method
文章编号:
202104003
作者:
徐金辉1许晨霄1冯青松1王 浩2孙 魁1
1)华东交通大学铁路环境振动与噪声教育部工程研究中心,江西南昌 330013;2)广州地铁集团有限公司运营事业总部,广东广州 510310
Author(s):
XU Jinhui1 XU Chenxiao1 FENG Qingsong1 WANG Hao2 and SUN Kui1
1) Engineering Research Center of Railway Environment Vibration and Noise of Ministry of Education, East China Jiaotong University, Nanchang 330013, Jiangxi Province, P.R.China 2) Operation Headquarters, Guangzhou Metro Group Co. Ltd., Guangzhou 510310, Guangdong Province, P.R.China
关键词:
铁道工程惯性基准法短波不平顺车辆-轨道耦合动力学柔性轨道轨道谱
Keywords:
railway engineering inertial reference method short wave irregularity vehicle-track coupling dynamics flexible track track spectrum
分类号:
U213.2
DOI:
10.3724/SP.J.1249.2021.04347
文献标志码:
A
摘要:
针对轨面短波不平顺敏感因素问题,利用多体动力学软件Universal Mechanical建立车辆-轨道耦合动力学模型,基于惯性基准法原理仿真检测轨面短波高低不平顺,分析轨道结构及其关键参数对轨面短波高低不平顺的影响.分析结果表明,柔性轨道估算不平顺大于无质量轨道,最大幅值差为0.076 mm,轨道结构振动对轨面短波高低不平顺具有一定影响,主要影响波长范围为0.15~0.46 m;扣件系统垂向刚度对短波不平顺的影响较大,幅值变化明显,波长0.15~0.33 m内轨道谱随扣件刚度的增大显著增大;短波不平顺随扣件阻尼、路基支承刚度及路基支承阻尼的增大而减小,主要影响波长范围分别为0.27~0.46、0.15~0.33及0.28~0.40 m;短波不平顺随轨枕间距的增大而略增大.研究成果可为短波不平顺的维护与控制提供理论依据,为列车运营安全提供保障.
Abstract:
Aiming at the sensitive factors of short wave irregularity on rail surface, the vehicle-track coupling dynamics model is established by using multi-body dynamics software Universal Mechanical. Based on the principle of inertial reference method, the short wave height irregularity of rail surface is simulated and detected. The influence of the track structure and its key parameters on the short wave height irregularity of rail surface is analyzed. The estimated irregularity of flexible track is greater than that of massless track, and the maximum amplitude difference is 0.076 mm; especially, the track spectrum of flexible track within the wavelength range of 0.15-0.46 m is significantly greater than that of massless track, which indicates that the vibration of the track structure has a certain impact on the short wave height irregularity of rail surface, and mainly affects the wavelength of 0.15-0.46 m. The vertical stiffness of the fastener system has a great influence on the short wave irregularity, and its amplitude changes obviously. The track spectrum in the wavelength range of 0.15-0.33 m increases significantly with the increase of fastener stiffness. The short wave irregularity decreases with the increases of fastener damping, subgrade support stiffness and subgrade support damping. The main wavelength ranges affected are 0.27-0.46, 0.15-0.33 and 0.28-0.40 m, respectively. The short wave irregularity increases slightly with the increase of sleeper spacing. The research results provide theoretical basis for the maintenance and control of short wave irregularity and guarantee the safety of train operation.
更新日期/Last Update: 2021-07-30