• Rohit Laxman Gaikwad
• Prof. Shriganesh S Kadam

In this research paper the main part of study was to check the response of the base isolation of the concrete deck slab structure under time history analysis. Base isolation is one of the most widely accepted seismic protection systems used in structures in earthquake prone areas. The base isolation system separates the sub structure from its super structure and primarily moves it relative to that of the upper structure. The aim of this study is calculate restoring forces and time period due to earthquake ground excitation, applied to the superstructure of the bridge by installing base isolation devices at the foundation level and then to compare the different performances between the fixed base condition and base-isolated condition. In this study, the bridge Structure with and without isolator is used as models. Friction base isolator and Rubber Base isolator is used as isolation system in this study. time history analysis is used on Conventional base and base isolated structure. The comparative study of the acceleration, displacement and base shear was carried out for both fixed Conventional base and base isolated structure. It is found that the displacement is increased with period of the structure in case of base isolated structure and the acceleration is reduced and vice versa.

Base isolation, rubber bearing, friction bearing, time history method, displacement, time period

"Seismic Behavior Evaluation of Base Isolated Structure with Different Isolators", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.358-368, June-2019, Available :http://www.jetir.org/papers/JETIR1906979.pdf

"Seismic Behavior Evaluation of Base Isolated Structure with Different Isolators", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp358-368, June-2019, Available at : http://www.jetir.org/papers/JETIR1906979.pdf