Structural Vibration of Low-Speed Maglev Switch Based on Measured Data

The switch is an important equipment in the low-speed maglev transit. It consists of an active girder and two driven girders and their vibration responses are of particular concern during design and operation. In this paper, the vertical vibration of active girder based on the measured results of switch in Shanghai Lingang low-speed maglev test line in the case of train passing and static levitation are analyzed. The results show that the conversion of straight-line position and lateral-line position has little effect on the vertical vibration of the switch. the active girder vertical acceleration while train passing is compared with that of static levitation. The measured accelerations are presented in the paper, and the vertical fundamental frequencies of the active girder is obtained according to the spectrum analysis, which is consistent with the FEM analysis result.