Influence of Curved Segment Guideway Parameters on Maglev Vehicle-Bridge Coupled Dynamics

doi:10.3969/j.issn.1004-132X.2026.09.028

Abstract

Abstract:

For the high-speed maglev vehicle-bridge coupling problem on curved sections， a maglev train model was established based on the multi-body dynamics theory and UM software. The influence of curved guideway parameters on the system response was analyzed. A matching scheme of train speed and curve radius was proposed. The research results show that the lateral acceleration of the body exceeds the limit as it passes through a curve with a radius of 3000 m and a cross slope angle of 12° at the speed of 400 km/h， so the speed needs to be reduced or the radius needs to be increased； increasing the cross slope angle may suppress the lateral acceleration while increasing the vertical acceleration； all responses meet the limit requirements as it passes through the curve with the radius of 6000 m and the speed of 450 km/h； when the cross slope angle does not exceed 12°， the minimum curve radii of 3000 m and 6000 m correspond to train speeds of 300 km/h and 400 km/h， respectively； when the cross slope angle does not exceed 9°， the minimum curve radius is 9000 m corresponding to the speed of 450 km/h.

Key words: maglev train, vehicle-bridge coupling, radius of curve, cross slope angle

摘要：

针对曲线段高速磁浮车-桥耦合问题，基于多体动力学理论与UM软件建立了列车模型，分析了曲线轨道梁参数对系统响应的影响，并提出车速与曲线半径的匹配方案。研究结果表明：400 km/h车速通过半径3000 m、横坡角12°曲线的车体横向加速度超限，需降速或增大半径；增大横坡角可抑制横向加速度但会增大垂向加速度；450 km/h通过6000 m半径曲线的各项响应均满足限值；横坡角不超过12°时，车速300 km/h、400 km/h对应的最小曲线半径分别为3000 m和6000 m；横坡角不超过9°时，车速450 km/h对应的最小曲线半径为9000 m。

关键词: 磁浮列车, 车-桥耦合, 曲线半径, 横坡角

CLC Number:

U266

JIAO Xianyun, WAN Yingxin, XU Tongqing, YU Mengge, ZHANG Qian. Influence of Curved Segment Guideway Parameters on Maglev Vehicle-Bridge Coupled Dynamics[J]. China Mechanical Engineering, 2026, 37(9): 2354-2361.

焦贤运, 万迎新, 徐同庆, 于梦阁, 张骞. 曲线段轨道梁参数对磁浮车-桥耦合动力学的影响[J]. 中国机械工程, 2026, 37(9): 2354-2361.

Figures/Tables 14

Tab.1 Dynamic parameters of high-speed maglev vehicle components

属性	质量/kg	质心坐标/m	转动惯量/（kg·m²）
车体	30 000	（-10.7，0，1.5）	（5×10⁴，3×10⁵，3×10⁵）
悬浮架	1000	（0，0，0）	（1×10³，1×10³，1×10³）
悬浮电磁铁	600	（0，0，-0.25）	（20，600，600）
导向电磁铁	600	（0，-0.08，0）	（20，600，600）

Fig.1 Cross section of maglev track girder

Fig.2 Maglev train simulation data diagram

Fig.3 Simulation data and measured data of mid-span vertical displacement

Fig.4 Dynamic response of flat curve track beam

Fig.5 Maglev body acceleration

Fig.6 Dynamic response of maglev vehicle with different cross slope angle

Fig.7 Time-range curves of lateral acceleration of 300 km/h car body

Fig.8 Amplitude of lateral acceleration of the car body at different speed

Tab.2 Lateral stable operating conditions at different speed

	速度/（km·h^-1）	横坡角/（°）	曲线最小半径/m
工况1	300	12	3000
工况2	350	12	4000
工况3	400	9	6000
工况4	400	12	6000
工况5	450	12	6000
工况6	450	12	7000
工况7	450	9	8000
工况8	450	12	8000
工况9	450	9	9000
工况10	450	12	9000

Fig.9 Dynamic response of track beams （vehicle speed is 450 km/h， track curve radius is 6000 m）

Fig.10 Time-range curves of car body vertical acceleration at 300 km/h

Fig.11 Vehicle body vertical acceleration amplitude at different speed

Tab.3 Matched minimum curve radii for maglev train operation

	速度/（km·h^-1）
	300	350	400	450
横坡角/（°）	12	12	9，12	9
最小曲线半径/m	3000	4000	6000	9000

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