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Authors
Affiliations
1 Department of Applied Mechanics, Government Polytechnic, Aurangabad, (Maharashtra), IN
2 Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur (Rajasthan), IN
Source
International Journal of Engineering Research, Vol 5, No SP 3 (2016), Pagination: 607-611
Abstract
Seismic hazard mitigation is one of the important issues in today’s practices therefore researchers are struggling for optimum solution since last few decades. Base isolation technique is one of the effective techniques which give better results in seismic hazard mitigation under earthquake excitation particularly in medium rise RC buildings. Base isolation system reduces not only the effects of earthquake acceleration to be transmitted to the building but also protect its contents. This study proposed a realistic ten storey RC building modeled as shear type lumped mass having single degrees-of-freedom at each floor level. This building is isolated by Resilient Friction Base isolator and excited under unidirectional ground motion due to four realistic earthquakes namely, Imperial Valley, 1940, Loma Prieta, 1989, Kobe, 1995 and North ridge, 1994. The governing equation of motion for the building has been solved using New marks method whereas isolation system is modeled by Wen’s model. The effectiveness of proposed isolation system with RC building has been evaluated through coding in MATLAB 8.2 computing software.Further, effectiveness of isolation system is studied by comparing the peak responses of base isolated building with fixed base building. The results obtained from the study underscored that seismic behavior of Resilient Friction Base Isolator found effectively in limiting the responses of building during excitation due to earthquakes.
Keywords
Seismic Behavior, Resilient Friction Base Isolator, Fixed Base Building, Building Peak Responses.
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