基于乘坐舒适性的单轴式单轨列车线路平面最小曲线半径及曲线限速研究
杜子学皮阳杨震
Minimum Horizontal Curve Radius and Curve Speed Limit of Single-axle Monorail Train Lines Based on Ride Comfort
DU ZixuePI YangYANG Zhen
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作者信息:重庆交通大学机电与车辆工程学院， 400074， 重庆
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Affiliation:College of Electromechanical and Vehicle Engineering, Chongqing Jiaotong University, 400074, Chongqing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20230744
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中图分类号/CLCN:U232
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栏目/Col:土建工程
摘要:
［目的］单轴式单轨列车实际运营时运行稳定性及乘坐舒适性较差，需从线路角度出发，研究单轴式单轨列车平面最小曲线半径及曲线限速的合理取值。［方法］建立了单轴式单轨列车的车轨耦合动力学模型，并验证了该模型的合理性。介绍了单轨列车运行平稳性及乘坐舒适性的评价方法。基于不同等级乘坐舒适度要求，提出了单轴式单轨列车线路平面最小曲线半径建议取值区间，通过仿真分析验证了所提建议取值区间的合理性。为实现线路与曲线通过速度的协调匹配，进一步研究得到了单轴式单轨列车在小曲线区段下的限速值。［结果及结论］设计速度一定时，线路平面最小曲线半径主要由曲线区段的最大超高角、未被平衡的列车横向振动加速度允许值决定。列车运行速度小于等于80 km/h时，单轴式单轨列车线路平面最小曲线半径按320 m取值，小曲线区段下的列车限速按4.30R(R为曲线半径)取值。
Abstracts:
［Objective］ To address the issues of poor operational stability and ride comfort in the actual operation of single-axle monorail trains, it is aimed to investigate the rational values of minimum horizontal curve radius and curve speed limit for single-axle monorail trains from the perspective of track alignment. ［Method］ A vehicle-track coupled dynamics model for the single-axle monorail train is established, and the model′s validity is verified. The evaluation methods for operational stability and ride comfort of monorail trains are introduced. Based on requirements for different ride comfort levels, a recommended value range for the minimum horizontal curve radius of single-axle monorail train lines is proposed. The rationality of recommended value ranges is verified through simulation analysis. To achieve the coordinated alignment of track and curve-passing speed, the speed limit of single-axle monorail train in small-radius curve sections is further investigated. ［Result & Conclusion］ For a given design speed, the minimum horizontal curve radius of the line is primarily determined by the maximum over-height angle in the curve section and the unbalanced allowable train lateral vibration acceleration. When the train operating speed is less than or equal to 80 km/h, the minimum horizontal curve radius of 320 m for a single-axle monorail train line is adopted, together with a train operating speed limit of 4.30R(where R is the curve radius) in small-radius curve sections.
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