THE EFFECT OF THE NUMBER OF STORY ON SEISMIC ISOLATED BUILDINGS

In this study, the effect of seismic isolators on the structural behavior and cost depending on the number of building storeys are investigated. 5, 10 and 15-storey buildings were modeled by placing the surface friction pendulum systems for determining the effect of number of building storeys. The top of the lowest floor column was chosen as the pendulum settlements. Twenty-four and six different types of friction pendulum with the effective stiffness were used in the seismic isolated building models. 5, 10 and 15-storey building models which generated by isolators and fixed base were analyzed with the computer program considering that they were built in the first seismic zone. The analysis results indicated that 5 and 10-storey isolated buildings performs very well during earthquakes, however, the use of friction pendulum system was not appropriate in high-rise buildings in terms of structural performance and cost