YUMUŞAK KAT ETKİSİ İÇEREN BETONARME YAPILARDA TABAN İZOLASYON SİSTEMLERİNİN KULLANILABİLİRLİĞİNİN ARAŞTIRILMASI

It

is known that reinforced concrete structures containing soft floor effects

suffer significant or pre-collapse damage during earthquakes. In this study, several

methods have been proposed to ensure that reinforced concrete structures

designed as soft floors for commercial purposes remain usable in possible major

earthquakes and to prevent risks to people's lives. In the study, the effects

of rubber-based and friction-based passive base isolation systems used in the

literature on the earthquake behavior of reinforced concrete buildings with

soft floor effect were investigated. Passive base isolation systems were used

in the 8-floor reinforced concrete structure, whose dominant mode period was

less than 1 s and whose ground floor was designed as a soft floor. A finite

element model of the reinforced concrete building was constructed and analyzed

in time domain under the ground motions of an earthquake centered on February

06, Maraş. The results of the study showed that the rubber-based base isolation

system significantly reduced the base shear forces, peak displacements, and

storey accelerations in the reinforced concrete building with soft story

effect. It is concluded that the use of base isolation systems can allow the

ground floor of a reinforced concrete building to develop soft storeys.<o:p></o:p>