LAUSR

Abstract Earthquakes are natural phenomena that damage structures and buildings and their equipment. Preventing the transfer of earthquake vibration to the buildings is important to protect the residents and reduce the damage. Base isolation with lead rubber isolator is one of the desirable methods to prevent the transfer of seismic to buildings. Many parameters are involved in the design of these isolators and some of them are unknown at the beginning of the design. Therefore, iterative methods are required to design these isolators. This research described two procedures for isolator design, First, usual design procedure based on AASHTO and ASCE7 codes and second, design based on the performance point that completely presented in this paper. Non-linear time history analysis was done for building analysis. Results show that the performance point method (PPM) is more accurate than the previous usual method. Also, base shear force and relative displacement of a fixed base and the isolated building were calculated and compared.