A STUDY ON SEISMIC ISOLATION SYSTEM USING HIGH-DAMPING RUBBER BEARINGS FOR RESIDENTIAL BUILDINGS IN TURKEY

Applicability of seismic isolation for residential buildings in Turkey is studied by analytical and experimental approach. High-damping rubber bearings are selected as components of seismic isolation system which is designed according to the recently updated Turkish Seismic Code issued in 2018. Three model buildings of different story height constructed at assumed site in seismic zone are chosen from database and equivalent lateral force procedure, and time history analyses are carried out. The analyses are also conducted for those with curved surface slider system and lead rubber bearing system in selected cases and the results are compared with those of high-damping rubber bearing. The seismic response of the buildings are evaluated and efficiency of the seismic isolation is confirmed. Subsequently, full-scale test specimens of high-damping rubber bearing are developed and subjected to dynamic loading test under test condition following protocol of prototype test specified in the code. The specific values of test conditions, such as compressive force, shear displacement and frequency, are developed based on the design spectra of several projects in Turkey. The results are comprehensively discussed and the applicability of high-damping rubber bearing for seismic isolation of residential buildings in Turkey is concluded with analytical and experimental approaches.