PERFORMANCE OF SEISMICALLY ISOLATED BUILDINGS USING SFP BEARING: AN APPLICATION IN VIETNAM

Abstract

At present, the use of structural vibration control technology in the design of earthquake resistant in Vietnam is very limited. In this paper, a performance evaluation of using single friction pendulum bearing (SFP) for earthquake resistant buildings with earthquake conditions in Vietnam is presented. A one-dimensional (1-D) model of a 5-storey building subjected to earthquakes was developed for time history analysis. Accordingly, the model is analyzed in two configurations: with and without SFP bearing. The ground acceleration data was selected and scaled to fit the design acceleration in Hanoi determined from TCVN 9386:2012. The dynamic responses of the two configurations was evaluated in detail. It is shown that the seismically isolated configuration can reduce the base shear up to 90%. A significant decrease in the inter-story drift and absolute floor acceleration was also observed.