Response of base–isolated structures-evaluation of different isolation systems

Abstract

Base isolation is a seismic mitigation technique that separates the structure from the ground motion by placing isolators between the foundation and the superstructure. This creates a flexible base that allows the structure to move independently of the ground, reducing the seismic forces transmitted to the superstructure. Different isolation systems have been developed, each with advantages and disadvantages. This paper evaluates the seismic response of base-isolated structures with varying isolation systems under various earthquake ground motions. The results show that base isolation can significantly reduce the seismic response of structures and that the effectiveness of different isolation systems depends on ground motion characteristics.