城市轨道交通车辆段或停车场线路用减振扣件刚度参数研究
孙建树和振兴石广田包能能张小安
Study on Parameters of Line Vibration Damping Fastener Stiffness in Urban Rail Transit Depot or Parking Lot
SUN JianshuHE ZhenxingSHI GuangtianBAO NengnengZHANG Xiao′an
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作者信息:兰州交通大学机电工程学院， 730070， 兰州
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Affiliation:School of Mechanical Engineering, Lanzhou Jiaotong University, 730070, Lanzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.07.005
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中图分类号/CLCN:U231.2∶U213.5+3
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栏目/Col:研究报告
摘要:
既有城市轨道交通车辆段或停车场减振扣件的刚度均基于正线80 km/h及以上列车运行速度进行设计，一般为15 kN/mm。而在车辆段或停车场内列车的运行速度远低于正线的运行速度。为了探索与车辆段或停车场行车速度相匹配的减振扣件的刚度，基于车辆轨道耦合动力学理论，建立了三维动力学仿真模型，研究了降低减振扣件的刚度值对车辆系统、轨道系统动力学响应及减振效果的影响。结果表明：随着减振扣件刚度的减小，钢轨垂向位移、轨下基础部分振动的变化显著；在列车运行速度小于30 km/h的车场线使用减振扣件时，其垂向刚度取值可以远低于既有的15 kN/mm，但是不宜低于4 kN/mm；若减振扣件垂向刚度取4 kN/mm，轨道的减振能力可提高7.18 dB，且车辆轨道系统的动力学响应仍低于正线80 km/h行车速度下既有减振扣件对应的动力学响应。
Abstracts:
Based on the main line of driving speed of more than 80 km/h, the stiffness of the vibration damping fastener in existing urban rail transit depot or parking lot is generally designed to be 15 kN/mm. Trains in the depot or parking lot are operating at much lower speed than on the main line. To explore the stiffness of vibration damping fastener that match the driving speed at depot or parking lot, based on the theory of vehicletrack coupling dynamics, a threedimensional dynamic simulation model is established, and the influence of reducing damping fastener stiffness on the dynamic response and vibration damping effect of vehicle system and track system is studied. Results show that with the reduction of vibration damping fastener stiffness, the change of rail vertical displacement and track ground vibration is significant. When using vibration damping fasteners for depot lines with driving speed of less than 30 km/h, the vertical stiffness value can be much lower than the current 15 kN/mm, but should not be less than 4 kN/mm. If the vertical stiffness of damping fastener takes 4 kN/mm, the vibration damping capacity of the track can be increased by 7.18 dB, and the dynamic response of vehicle track system is still lower than that of the existing damping fastener on main line with driving speed of 80 km/h.
引文 / Ref:
孙建树，和振兴，石广田，等.城市轨道交通车辆段或停车场线路用减振扣件刚度参数研究[J].城市轨道交通研究，2022，25（7）：24.
SUN Jianshu，HE Zhenxing，SHI Guangtian，et al.Study on Parameters of Line Vibration Damping Fastener Stiffness in Urban Rail Transit Depot or Parking Lot[J].Urban mass transit，2022，25（7）：24.
SUN Jianshu，HE Zhenxing，SHI Guangtian，et al.Study on Parameters of Line Vibration Damping Fastener Stiffness in Urban Rail Transit Depot or Parking Lot[J].Urban mass transit，2022，25（7）：24.
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