The effect of sliding base on earthquake response of buildings

Abstract

Sliding behaviour at the bases during the earthquake response could be used positively in seismic design to control the damages of the superstructures with a relatively higher strength. It has been found theoretically that the required level (of strength?) is closely related to the friction coefficient at the base-foundation. In this paper the behaviour of flexible foundation is modeled by a new bilinear model which includes the peak value of friction coefficient at the start of sliding and the average value during cyclic responses. The effects of the peak on responses were investigated through the earthquake response analysis of two-degree-of-freedom system with the new hysteresis model at the base.