Dynamic Property Analysis of At-Ground Structure Under Moving Maglev Train

Abstract

Abstract In order to study the vertical coupling vibration of low–medium-speed Maglev train and at-ground structure system, the vertical coupling vibration model of low–medium-speed Maglev train-bridge system is established firstly based on the co-simulation of SIMPACK and ANSYS. The method of co-simulation is verified through the test experiments on a 20-m simply supported beam dynamic load experiment test line. Later, the vertical coupling vibration dynamics simulation model of low–medium-speed Maglev train and at-ground structure system is built and the dynamic simulation analysis is performed. According to the analysis, the vibration frequency of the at-ground structure is relatively high and the first vertical vibration frequency is 32.9 Hz; the vertical displacement and acceleration of the frame’s center of the at-ground structure are bigger than the bottom’s center; the vibration of the frame is the high-frequency vibration (comparing with the bottom), and the acceleration of the frame’s center is obviously greater than the bottom’s between 50 and 100 Hz.

Keywords

• Low–medium-speed Maglev train
• At-ground structure
• Coupling vibration
• High-frequency vibration
• Co-simulation