Vibration Control of Unsymmetrical RC Building Using Tuned Mass Damper
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 5
Abstract
Vibrations are one of many environmental factors that act on building and potentially reduce their lifetime. Current trends in construction demand taller and lighter structures, which are also flexible and having quite low damping value. Tuned mass dampers is a passive energy dissipating device which is comprised of a mass, springs and damper attached to the structure and are used for vibration control of structures when subjected to earthquake excitations. The aim of this project is to analysis the vibration of unsymmetrical structural frames subjected to seismic excitation and a general understanding of the structural behavior through SAP software. An additional RC top floor of 2% and 3% mass of building is installed and utilized as a large scale mass damper. L shaper unsymmetrical buildings was being analysed here under three different past earthquakes. Nonlinear time history analysis is carried out for buildings. The result obtained shows more reductions in base shear, net displacement, storey drift and increase in the time period of the building when 3% mass of building is provided as TMD.
Authors and Affiliations
Anju Krishna P, Aswathy P
Keywords
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