Author : Saurabh DuttDiwaker 1
Date of Publication :17th May 2018
Abstract: This paper presents information on the design procedure of seismic base isolation systems. Analysis of the seismic responses of isolated structures, which is oriented to give a clear understanding of the effect of base isolation on the nature of the structure and discussion of various isolator types are involved in this work. The concept of Base isolation is to insert a flexible layer between foundation and superstructure thus decoupling the building from damaging action of ground motion. The paper presents comparative study of performance of base isolators namely Lead Rubber Bearing (LRB) and Friction Pendulum Bearing(FPB). For this study R.C building is considered and Time History analysis is carried out using ETABS software. Parameters like Story stiffness and Time period are compared for the building with base isolator and building with fixed base. Due to the presence of isolator parameters are changed in each direction (X and Y direction) as compared to fixed base building.
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