Aiming at the problems of accurate prediction and broadband control of vibration and noise in urban rail transit, a fast calculation method for coupled structures based on energy methods is proposed. A full-path analysis model for the generation and transmission of vibration and noise from source to path to building is established. The broadband vibration characteristics of vibration sources, propagation coupling loss, and the mechanism of structural and acoustic coupling in rail transit environmental vibration and structural secondary noise are clarified. The influence laws of key factors on environmental vibration and noise are revealed. A rail transit environmental vibration and noise control technology system covering "source frequency domain control - path vibration isolation optimization - vibration protection" is proposed.

Keywords: Rail transit; vibration prediction; noise and vibration control; energy functional variational method

Dr. Wenjie Guo , Associate Professor and Doctoral Supervisor, School of Transportation Engineering, East China Jiaotong University. He has long been engaged in the research on environmental vibration and noise of railways. He has presided over 5 national and provincial-level fund projects, and published more than 40 high-level journal papers as the first author or corresponding author, including 21 SCI-indexed papers and 20 EI-indexed papers.