SEISMIC ANALYSIS OF HIGH DAMPING RUBBER BEARINGS FOR BASE ISOLATION

G. Arya, Alice T.V, Alice Mathai

Abstract: Base isolation is a mechanism that provides earthquake resistance to the new structure. The base isolation system decouples the building from the horizontal ground motion induced by earthquake, and offers very stiff vertical components to the base level of the superstructure in connection to substructure (foundation). It shifts the fundamental lateral period, dissipates the energy in damping, and reduces the amount of the lateral forces that transferred to the building, inter-story drift, and the floor acceleration. The work deals with modelling and finite element analysis of a high damping rubber bearing in ANSYS 12.0. A displacement controlled transient analysis was done to analyse the behaviour of the isolator during earthquakes.

Keywords: Base isolation, High damping rubber, Transient analysis

DOI: https://doi.org/10.15623/ijret.2015.0401048