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Analytical Study of RCC Frame Building with Triple Friction Pendulum under Earthquake Time History
Published in Fast Track Publications
Volume: 6.0
Issue: 6.0
Pages: 731.0 - 741.0
During the impact of seismic waves, we observe greatcollateral damages as ground shakes every structureconnected to ground face the impact. What if we detach thestructure from ground or base? Friction pendulum as a baseisolator works in similar way by decoupling the structure fromits base and hence reducing the responses that damages thestructure.As concept of single friction pendulum was introduceit was observed that it displaces in large space which causeddifficulty in installing multiple bearing at one site. So toovercome this situation new bearing were designed in whichmultiple plates slide over each other. Due to its mechanism ofsliding over multiple plates, their performances were betterthan single friction pendulum, though using less space to slide.Triple friction pendulum was highly preferred when it comesto select for base isolation, because of its adoptive naturetowards all three level of earthquake (SLE, DBE, and MCE).This paper summaries response analysis of optimizedtriple friction pendulum (TFP) at base of 9 storey RCC buildingunder seismic waves. The building is situated in earthquakezone V as per IS1893:2002. As for reference it is comparedwith fixed base structure under same seismic condition. Theresults indicate by addition of triple friction pendulum at baseof structure, significant decrease in responses like storey drift,storey shear, spectral acceleration, input energy was observed.Also, it obviously leads to increase in fundamental time periodof structure. One of major aspect of triple friction pendulumwas taken care of, that is, re-centering capability of plates byplotting the displacement-time graph of each link.
About the journal
JournalInternational Research and Journal of Engineering and Technology
PublisherFast Track Publications
Open Access0