Investigation of a Base-Isolator System’s Effects on the Seismic Behavior of a Historical Structure

The earthquake performance of structures with seismic isolation is much better than that fixed-base structures, and the application insulation ensures both structural integrity protection items present in structures. base-isolation system used to extend fundamental period vibration structure obtain higher value from base-isolated relative structure. Historical masonry mosques could be strengthened using a technique. In this study, historical mosque was organized modelled SAP2000 software. Nonlinear Time History analyses were carried out for structure, firstly secondly lead rubber bearing (LRB). use base-isolator caused an increase mosque’s period, reducing displacements, acceleration, force applied on resulting deformation; results analysis indicate significant improvement behavior. modelling show such buildings (especially those high delicate minarets) can vulnerable major earthquakes, it may useful examine strengthening strategies these buildings.