A Typical Non-Linear Dynamic Analysis of Asymmetric RCC Buildings with Base Isolation, Damper and Bracing During Earthquake
The development in concrete technology covering materials, structural systems, and construction techniques made it possible to build concrete tall buildings. The needs and demands of taller structures in construction industry and real estate industry are increasing day by day all over the world. These structures are flexible in nature and constructed as light weight as possible (when seismic load acts on a RCC structure it play as a functions of self-weight), which have less values of damping, makes them vulnerable to undesirable vibrations. This vibration in the structures creates major problems to serviceability requirement or demand of the structure and also reduces structural integrity with possibilities of failures. Construction decades or a Current trend uses several new techniques adopted to reduce earthquake and wind induced structural vibration.
In recent year’s considerable large concentration has been paid to research and development of structural control systems and devices with particular importance on mitigations of seismic and wind responses of buildings. Many vibration-control control systems are categorised measures like active, semi-active, passive and hybrid Control methods have been developed. on-structural components are sensitive in nature due to large amount of ground motions which produces floor accelerations, velocities, and displacements. At the time of an earthquake, the buildings produce motion, resulting in peak floor accelerations higher than the peak ground acceleration. Thus earthquake ground motion can causes significant or severe structural damages. Therefore, the demands of structural response control system increase worldwide.
This article deal with review of RCC structures with some most worldwide used structural response control system or devices such as damper, base isolation and bracing, Article also comprises recent development in these control systems with their structural reduction efficiency. In this study, reinforced concrete structure is taken for seismic performance evaluation. This RC building is modeled with different structural control system such as base isolator, damper and bracing with use of commercial computer software. After that various ground motion data is applied to the building model to evaluate structural response. Nonlinear time history analysis is carried out for building model with each control system (base isolation, damper and bracing) and the result of seismic response of each of control system is compared with other control system.
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