Technological friction dampers system (TFDS) - Novel base isolation system (TBIS) and hybrid system for steel structures

This study involves an analytical investigation of the earthquake performance of Technological Friction Damper Systems-TFDS and the novel Technological Base Isolator System-TBIS in steel structures. The earthquake performance of a 5-story steel structure, which is considered within the scope of this study, was analyzed using both the pushover method and the time history analysis method in accordance with the Turkish Building Earthquake Code 2018 TBEC-2018. The pushover analysis method was chosen for retrofitting with the TFDS, while time history analysis methods were selected for the retrofitting study involving TBIS and the hybrid system. 11 scaled earthquake records were utilized for history analysis. It was observed that no damage occurred in the structure after retrofitting with TFDS. Furthermore, FEM analyses also corroborated this finding. On the other hand, when the reference structure was analyzed using the time history analysis method with 11 scaled earthquake records, it was noted that 36% of the ground floor columns did not meet the TBEC 2018 limit conditions. However, damage was prevented when TBIS and TBIS-TFDS-Hybrid were used together. Additionally, it was observed that the TBIS system reduced the roof's relative displacement of the structure by 54%, and the hybrid system reduced it by 61%.