Abstract
Abstract The use of seismic isolators is a design method that involves inserting a flexible element at the base of the structure to decouple its movement from that of the ground to reduce vulnerability to earthquakes. They also make it possible to reduce the demand for force and deformation on the various structural elements. The aim of this research is to evaluate the contribution of HDRB high damping elastomeric seismic isolators in the reduction of seismic forces. It also consists in comparing the results of the dynamic analysis of the two fixed base structures in frames or frames braced by shear walls with the isolated structure mounted on an HDRB elastomer system and subjected to the same seismic excitation using the SAP 2000 calculation software. The results obtained showed an attenuation in the accelerations, a lengthening of the period, strong reduction in displacements and a reduction in the shearing force at the base of the isolated structure compared to fixed base structures.
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