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<p>Environmental vibration restricts the advancement of high-speed maglev infrastructure. Taking the Shanghai maglev demonstration line as the research object, field tests and numerical simulations are carried out to explore maglev-induced environmental vibration characteristics. Time/frequency domain analysis, one-third octave band and vibration level evaluation are adopted to reveal vibration transmission in piers and surrounding soil. A vehicle-guideway coupled dynamic model and a 2.5D finite element of the guideway-pier-pile-soil model are established to analyze subsurface vibration attenuation and predict vibration levels under a 600&#xa0;km/h operating speed. Results indicate vertical vibration dominates environmental disturbance. Vibration rises markedly at 600&#xa0;km/h but still satisfies environmental standards. The subsurface vibration attenuation trend matches theoretical predictions, verifying the applicability of the Rayleigh wave attenuation theory for maglev vibration research. Peak soil acceleration and displacement appear at shallow subsurface depths, and 50&#xa0;m underground is the cost-effective depth for protecting underground precision instruments. This work provides theoretical support and practical references for 600&#xa0;km/h maglev guideway design and underground vibration mitigation.</p>

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Experimental and simulation research on environmental vibration characteristics of high-speed maglev trains

  • 期刊论文

  • 发表日期：

    2026年7月28日

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  • Dongran Guo,
  • Jingyu Huang

摘要

Environmental vibration restricts the advancement of high-speed maglev infrastructure. Taking the Shanghai maglev demonstration line as the research object, field tests and numerical simulations are carried out to explore maglev-induced environmental vibration characteristics. Time/frequency domain analysis, one-third octave band and vibration level evaluation are adopted to reveal vibration transmission in piers and surrounding soil. A vehicle-guideway coupled dynamic model and a 2.5D finite element of the guideway-pier-pile-soil model are established to analyze subsurface vibration attenuation and predict vibration levels under a 600 km/h operating speed. Results indicate vertical vibration dominates environmental disturbance. Vibration rises markedly at 600 km/h but still satisfies environmental standards. The subsurface vibration attenuation trend matches theoretical predictions, verifying the applicability of the Rayleigh wave attenuation theory for maglev vibration research. Peak soil acceleration and displacement appear at shallow subsurface depths, and 50 m underground is the cost-effective depth for protecting underground precision instruments. This work provides theoretical support and practical references for 600 km/h maglev guideway design and underground vibration mitigation.