Akademik Veri Yönetim Sistemi
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.41, sa.1, ss.63-78, 2026 (SCI-Expanded, Scopus, TRDizin)
The huge energy generated in the earthquake source reaches the structures in the impact area and causes damage. In order to reduce the damage, the energy reaching the structural elements must be minimized. Separating the structures from the ground with seismic isolation systems placed on the ground floor greatly reduces the energy reaching the structural elements. In this study, the energy changes entering the structure according to different seismic isolator parameters of 3, 6 and 9-storey seismic isolated steel frames were investigated. Lead-core rubber isolator was selected as the seismic isolation system. The superstructure models are modeled with linear materials, while the isolation systems are modeled with non-linear materials. 100 different isolation systems were produced using the isolation period and characteristic strength in the seismic isolation design. The produced seismic isolation systems were applied to superstructure models with different stories and a total of 3300 time history analyses were performed with 11 different acceleration records scaled in accordance with TBEC 2018. A program was developed in Matlab software to repeatedly run the SAP2000 program in which structural analyzes were performed. As a result of the analyses performed with different isolation parameters, the energy entering the structure and the structural responses were compared. The results show that the input energy changes directly proportional to the roof floor accelerations and base shear forces, and inversely proportional to the isolation displacement and damping ratio. Additionally, optimum isolation parameters were determined with the help of the generated graphics. Consequently, it was demonstrated that the input energy can be used in the modeling seismic isolation elements in the future.