COMPARISION OF SESMIC RESPONSES OF RC FRAMED STRUCTURES HAVING DIFFERENT BASE ISOLATION CONDITIONS

Abstract

In day todays life many areas are prone to earthquake due to which old conventional buildings pay a heavy toll by getting damaged so countries are trying different methods to reduce the damage done by earthquakes. Base isolation method is one of the method which is being used to protect the valuable buildings such as museums, hospitals and etc. In base isolation the super structure and the sub structure acts independently of the building which helps in saving the building as the modal period increases. There are many type of base isolators used in practice such as Lead Rubber Bearing isolator, Friction Pendulum Bearing isolator and etc. In the present study a RC framed building was designed, G+3 with a height of 13m in which seismic analysis was done and different conditions of base isolator were studied and also of the conventional building too using the software E-tabs. The analysis was done on seven type of conditions where composition of Lead Rubber Bearing isolator and Friction Pendulum Bearing isolator were studied. The results were compared and studied. It was found that the lead rubber bearing isolator is more effective than Friction Pendulum Bearing and way better than of conventional fixed base. The base shear, displacement, drift and the modal period were compared for the conclusion.