[1]崔晓璐,徐 佳,李 童,等.科隆蛋扣件区段钢轨吸振器抑制钢轨波磨的机理[J].交通运输工程学报,2023,23(05):118-128.[doi:10.19818/j.cnki.1671-1637.2023.05.007]
 CUI Xiao-lu,XU Jia,LI Tong,et al.Mechanism of rail vibration absorber suppressing rail corrugation in Cologne-egg fastener section[J].Journal of Traffic and Transportation Engineering,2023,23(05):118-128.[doi:10.19818/j.cnki.1671-1637.2023.05.007]
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科隆蛋扣件区段钢轨吸振器抑制钢轨波磨的机理()
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《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

卷:
第23卷
期数:
2023年05期
页码:
118-128
栏目:
道路与铁道工程
出版日期:
2023-11-10

文章信息/Info

Title:
Mechanism of rail vibration absorber suppressing rail corrugation in Cologne-egg fastener section
文章编号:
1671-1637(2023)05-0118-11
作者:
崔晓璐12徐 佳1李 童1徐晓天1漆 伟2刘津治3
(1.重庆交通大学 机电与车辆工程学院,重庆 400074; 2.重庆市轨道交通(集团)有限公司,重庆 401120; 3.重庆轨道四号线建设运营有限公司,重庆 400000)
Author(s):
CUI Xiao-lu12 XU Jia1 LI Tong1 XU Xiao-tian1 QI Wei2 LIU Jin-zhi3
(1. School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. Chongqing Rail Transit(Group)Co., Ltd., Chongqing 401120, China; 3 Chongqing Rail Transit Line 4 Construction and Operation Co., Ltd., Chongqing 400000, China)
关键词:
地铁 钢轨波磨 摩擦自激振动 小半径曲线区段 钢轨吸振器 科隆蛋扣件
Keywords:
metro rail corrugation friction self-excited vibration sharp curved section rail vibration absorber Cologne-egg fastener
分类号:
U211.5
DOI:
10.19818/j.cnki.1671-1637.2023.05.007
文献标志码:
A
摘要:
开展了重庆地铁1号线钢轨波磨的现场调研,建立了科隆蛋扣件小半径曲线区段车辆-轨道系统的动力学模型,研究了导向轮对通过该区段时的动力学特性; 基于轮轨系统摩擦自激振动理论建立了相应区段轮对-钢轨-吸振器系统的有限元模型,应用复特征值法和瞬时动态法研究了钢轨波磨的形成机理和钢轨吸振器的抑制机理; 采用控制变量法探究了钢轨吸振器连接参数和安装方式对钢轨波磨的影响规律。研究结果表明:科隆蛋扣件小半径曲线区段导向轮对与钢轨间的蠕滑力趋于饱和,容易引起轮轨系统发生频率为477.65 Hz的摩擦自激振动,从而导致低轨表面形成30~40 mm的钢轨波磨; 安装钢轨吸振器能有效降低轮轨系统对应频率下的摩擦自激振动,进而抑制科隆蛋扣件小半径曲线区段钢轨波磨的产生; 在一定范围内增大钢轨吸振器的连接刚度和连接阻尼,或改变钢轨吸振器的安装方式均有助于减小轮轨系统的摩擦自激振动,从而抑制波磨的产生和发展; 当钢轨吸振器横向连接刚度和阻尼分别为60 MN?m-1和50 kN?s?m-1,纵向连接刚度和阻尼分别为60 MN?m-1和50 kN?s?m-1,垂向连接刚度和阻尼分别为120 MN?m-1和100 kN?s?m-1,并且钢轨吸振器连续安装在钢轨轨腰两侧,轮轨系统发生摩擦自激振动的可能性最小。
Abstract:
The field investigation of rail corrugation in Chongqing Metro Line 1 was implemented. The dynamical model of the vehicle-track system in the sharp curved section with Cologne-egg fastener was established, and the dynamical characteristics of the leading wheelset passing the section were studied. Based on the theory of friction self-excited vibration of the wheel-rail system, the finite element model of the wheelset-rail-vibration absorber system of the corresponding section was established. The complex eigenvalue and the instantaneous dynamic methods were applied to study the generation mechanism of rail corrugation and the suppression mechanism of the rail vibration absorber. The influence laws of connection parameters and installation methods of the rail vibration absorber on rail corrugation were explored by the control variable method. Analysis results show that the creep force between the leading wheelset and the rail tends to be saturated in the sharp curved section with Cologne-egg fastener, which can easily cause the friction self-excited vibration of the wheel-rail system with a frequency of 477.65 Hz, thereby leading to the rail corrugation with the wavelength of 30-40 mm on the surface of the low rail. By installing the rail vibration absorber, the friction self-excited vibration of the wheel-rail system at the corresponding frequency can be effectively reduced, which further suppresses the formation of rail corrugation in the sharp curved section with Cologne-egg fastener. Increasing the connection stiffness and damping of the rail vibration absorber within a certain range or changing the installation method of the rail vibration absorber can be beneficial to reduce the friction self-excited vibration of the wheel-rail system, thus inhibiting the generation and growth of rail corrugation. When the lateral connection stiffness and damping of rail vibration absorber are 60 MN?m-1and 50 kN?s?m-1, the longitudinal connection stiffness and damping of rail vibration absorber are 60 MN?m-1 and 50 kN?s?m-1, and the vertical connection stiffness and damping of rail vibration absorber are 120 MN?m-1 and 100 kN?s?m-1, respectively, and the rail vibration absorber is installed continuously on both sides of the rail web, the occurrence possibility of friction self-excited vibration of the wheel-rail system is the smallest. 2 tabs,16 figs, 30 refs.

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备注/Memo

备注/Memo:
收稿日期:2023-04-23
基金项目:国家自然科学基金项目(52275176); 重庆市自然科学基金项目(CSTB2022NSCQ-MSX1542); 重庆市教育委员会科学技术研究项目(KJZD-K202100703); 重庆市研究生科研创新项目(CYS23504)
作者简介:崔晓璐(1990-),女,山东济南人,重庆交通大学教授,工学博士,从事轮轨摩擦学研究。
更新日期/Last Update: 2023-11-10