Research on vibration control of building over rail transit depot by inerter system

Focusing on inertance systems and double-deck rail transit vehicle depot superstructure buildings, a finite element model was established and validated, the effectiveness of different types and inertance-to-mass ratios of inertance systems in controlling the vibration of these superstructure buildings was investigated. The results indicate that the three types of inertance systems viscous mass damper (VMD), tuned inerter damper (TID) and tuned viscous mass damper (TVMD) can all effectively reduce the Z-weighted vibration level on each floor of the upper building, and the damping effect becomes more pronounced as the inertance-to-mass ratio increases. Inertance systems TID and TVMD with different inertance-to-mass ratios exhibit larger reductions in the Z-weighted vibration level, reaching 1 dB~3 dB; whereas VMD shows relatively weaker damping performance, with a reduction in the Z-weighted vibration level of approximately 1 dB.