A Study on Dynamic Response of High-Rise Buildings using Lead Rubber Bearing Isolator

Abstract

Abstract: Seismic devastation can result in significant fatalities as well as economic damage to structures and individuals living in seismic danger zones. As shown by prior catastrophic disasters, each earthquake leaves a substantial amount of destruction in its wake. To reduce the detrimental effects of seismic activity on buildings without causing the entire structure to collapse, these structures must be seismically safeguarded. To maintain these RC structures and improve their performance during a seismic event, a variety of seismic retrofitting methods are now being employed. Base isolation is one of the most effective strategies for mitigating the effects of seismic risks.

This study uses linear and non-linear dynamic analysis as defined by IS Codal to investigate the seismic behavior of a structure with a fixed base and a structure with base isolation. Using the ETABS software, the impacts of various types of base isolator systems are taken into account in the modelling of RC structures for symmetric and asymmetric plan configurations of both G+7 and G+10 storey heights. Many parameters, such as storey drift, base shear, Storey displacement, and time period, are compared for isolated base and fixed base scenarios.

Index Terms: Base isolator, Lead Rubber bearing (LRB), Storey drift, Base shear, Time period, Storey displacement.