Experimental study on dynamic performance of medium and low speed maglev train-track-bridge system

Miao Li, Shihui Luo, Weihua Ma, Cheng Lei, Tie Li, Qibin Hu, Xiulu Zhang and Yapeng Han

International Journal of Rail Transportation, 2021, vol. 9, issue 3, 232-255

Abstract: Train-track-bridge dynamic tests were conducted on the Shanghai Lingang Medium and Low Speed Maglev Test Line. A newly developed levitation bogie with mid-set air spring was used on the test train. The test results show that: the vertical and lateral first-order natural frequencies are 7.50 Hz and 6.00 Hz, respectively; vehicle speed has no significant effect on the vertical dynamic displacement of the bridge; within specific speed ranges, the acceleration of the test train-track-bridge system shows monotonic variation characteristics as vehicle speed changes; the lateral accelerations of the bridge, sleeper, and F-shaped rail are distributed in a wider dominant frequency band compared with the corresponding vertical accelerations; the dominant frequency bands of vibration acceleration of levitation bogie and car body are generally concentrated below 15 Hz; the vertical and lateral Sperling indexes of the test train are less than 2.5, indicating that the test train is superior in ride quality.

Date: 2021
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DOI: 10.1080/23248378.2020.1798294

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