PREDICTING THE DISPLACEMENT OF SEISMIC BASE ISOLATION SYSTEM USING TRIPLE FRICTION PENDULUM BEARING

Abstract

Horizontal displacement is one of the disadvantages of base isolated structures. It needs to be determined correctly during the design process. This paper presents how to determine peak horizontal displacement of the seismic base isolation systems using triple friction pendulum bearings by equivalent linear force procedure according to ASCE/SEI 7-16 standard. The study conducted to analyze a numerical example of single degree-of-freedom systems to determine the peak horizontal displacement of the seismic isolation system by two methods: the equivalent linear force procedure and the nonlinear time history analysis. Through this numerical example, the steps in the equivalent linear force procedure are further clarified, its accuracy is also evaluated, and a correction recommendation is given.