Abstract

Suspension bridges are vital transportation infrastructures that support high traffic levels. It is of great importance for suspension bridges to remain operational following hazardous earthquake motions. Seismic devices preserve crucial bridge elements and aid in the control of ground motion response through energy dissipation and damping. This literature review introduces and evaluates the performance of widely-applied anti-seismic technologies such as tuned mass dampers, fluid viscous dampers, and seismic isolators in suspension bridge designs. The paper condenses and compares the results of analytical literature surrounding the effectiveness of seismic devices. Conclusions from current research indicate that the implementation of fluid viscous dampers is optimal for deck displacement damping in suspension bridges. Less effectiveness is found for seismic isolators and almost negligible success is found for tuned mass dampers under high seismic motions. The generalization of the results and the potential performance discrepancies due to spatial variability are noted.

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