双重钢轨吸振器对轨道系统的振动抑制研究

doi:10.3901/JME.2020.12.184

机械工程学报 ›› 2020, Vol. 56 ›› Issue (12): 184-195.doi: 10.3901/JME.2020.12.184

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双重钢轨吸振器对轨道系统的振动抑制研究

文永蓬, 纪忠辉, 翁琳, 邹钰, 孙倩

上海工程技术大学城市轨道交通学院上海 201620

收稿日期:2019-08-06 修回日期:2019-11-15 出版日期:2020-06-20 发布日期:2020-07-14
通讯作者: 文永蓬(通信作者),男,1979年出生,博士,副教授,硕士研究生导师。主要研究方向为城市轨道车辆振动与控制、城市轨道车辆轮轨磨损、城市轨道车辆关键结构优化设计。E-mail:yp_wen@163.com
作者简介:纪忠辉,男,1995年出生。主要研究方向为城市轨道交通钢轨振动与波磨抑制。
基金资助:
国家自然科学基金（11472176，51701118）和上海市自然科学基金（15ZR1419200）资助项目。

Study on Vibration Suppression of Track System via Double Rail Vibration Absorber

WEN Yongpeng, JI Zhonghui, WENG Lin, ZOU Yu, SUN Qian

School of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620

Received:2019-08-06 Revised:2019-11-15 Online:2020-06-20 Published:2020-07-14

摘要/Abstract

摘要： 城市轨道交通线路在小半径曲线、加减速区段等特殊地段，具有较高的减振性能需求，附加钢轨吸振器是一种有效抑制轨道系统振动的方法。以抑制地铁特殊地段的钢轨振动为目的，建立含附加钢轨吸振器的轨道垂向动力学模型，求解钢轨的振动响应，以分析钢轨的振动形式为基础，建立评价振动大小的Pinned-Pinned振动突变量化指标与分级标准。提出了单个钢轨吸振器抑制钢轨振动的设计方法并拟合优化设计频率表达式，指出附加单个钢轨吸振器带来的不利影响，进而提出双重钢轨吸振器的设计方法。结果表明，钢轨的动柔度在900~1 300 Hz发生体现为尖峰与低谷的突变现象，建立的突变指标可以用于评价钢轨的Pinned-Pinned振动的大小；单个钢轨吸振器可以有效地抑制钢轨振动，但附加的吸振器会给轨道系统带来不利影响，导致轮轨动作用力的加剧；双重钢轨吸振器因存在两个减振频率的特点，不仅可以有效地抑制钢轨振动，而且对钢轨的不利影响较小，使钢轨的振动响应更平缓。对钢轨Pinned-Pinned振动的量化评价以及钢轨吸振器的理论参数设计具有重要的参考价值。

关键词: Pinned-Pinned振动, 突变指标, 双重吸振器, 振动抑制, 振动衰减率

Abstract: Urban rail transit lines have high requirements for vibration reduction performance in special sections such as small radius curves and acceleration and deceleration. Additional rail vibration absorbers are an effective method to suppress track system vibration. For the purpose of suppressing the vibration of the rail in special sections of the subway, the vertical dynamic model of the rail with additional rail vibration absorber is established and the vibration response of the rail is solved. Based on the analysis of the vibration form of the rail, a Pinned-Pinned vibration mutation index and grading standards for evaluating its vibration are presented. The design method for suppressing rail vibration by a single rail vibration absorber is proposed and the optimized design frequency expression is fitted. The adverse effects of the additional rail vibration absorber are pointed out. Furthermore, the design method of the double rail vibration absorber is proposed. The results show that the rail receptance occurs a mutation phenomenon which expressed as peaks and valleys between 900-1 300 Hz. The established mutation index can be used to evaluate the Pinned-Pinned vibration of the rail. The single rail absorber can effectively restrain the rail vibration. However, the additional vibration absorber will adversely affect the track system, resulting in an increase in the force of the wheel rail. The double rail vibration absorber has the characteristics of two damping frequencies, which can not only effectively suppress the rail vibration, but also the adverse effects on the rails are small, making the vibration response of the rails more gradual. The work of the study has important reference value for the quantitative evaluation of the Pinned-Pinned vibration of the rail and the theoretical parameter design of the rail absorber.

Key words: Pinned-Pinned vibration, mutation index, double vibration absorber, vibration suppression, vibration decay rate

中图分类号:

U211

文永蓬, 纪忠辉, 翁琳, 邹钰, 孙倩. 双重钢轨吸振器对轨道系统的振动抑制研究[J]. 机械工程学报, 2020, 56(12): 184-195.

WEN Yongpeng, JI Zhonghui, WENG Lin, ZOU Yu, SUN Qian. Study on Vibration Suppression of Track System via Double Rail Vibration Absorber[J]. Journal of Mechanical Engineering, 2020, 56(12): 184-195.

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双重钢轨吸振器对轨道系统的振动抑制研究

Study on Vibration Suppression of Track System via Double Rail Vibration Absorber

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