THE ROLE OF ISOLATORS IN THE SEISMIC RESPONSE OFMONORAIL BRIDGES CONSIDERING SSI

Seismic isolation is a strategy that protects structures against dynamic forces by increasing theirnatural period. Despite the widespread use of seismic isolators in conventional bridges, there are verylimited reports on the use of this technique on monorail bridges. Seismic isolation technique can alsobe useful for straddle-type monorail transportation systems. This study aims to investigate thenonlinear seismic performance of the Qom Monorail Bridge (QMB), in two cases with and without theisolator system, by considering the interaction of soil-pile-bridge-train (SPBT) using the ۳D finiteelement method. The results showed that the use of seismic isolation systems causes a properdistribution of energy between the soil environment and the pile groups and reduces the nonlineareffects of the soil.

کلیدواژه ها:

Soil-Pile-Structure Interaction ، Monorail Bridges ، Train-Bridge Interaction ، SeismicIsolator