Analysis of a reinforced concrete building added damping systems considering structure-soil interaction

In this thesis, nonlinear dynamic analyses of a hospital building are performed by considering the soil-structure interaction for bare frame, only inter-storey isolated, only fluid viscous damped, inter-storey isolated hybrid structure in which fluid viscous dampers are added to the superstructure and alternatively inter-storey isolated hybrid structure in which fluid viscous dampers are added only to the substructure. Vertical components of 4 different ground motions are added for these dynamic analyses. Even though before earthquake analyses of building with fluid viscous damper and with base-isolation hybrid system are conducted considering soil-structure interaction, earthquake analyses of building with interstory isolation and with fluid viscous damper hybrid system building are not conducted considering soil-structure interaction. It is made benefit of SAP2000 v23.0.0. software for dynamic analyses. Because of the fact that Christchurch New Zealand and Darfield New Zealand earthquakes were recorded at different angles, directions of these earthquakes are inputted with respect to degree. Soil-structure interaction are modelled by direct method. As a boundary condition, viscous boundary condition is used. Finite elements method is used in all modelling. Simplified sequential search algorithm for optimization of fluid viscous dampers, uniform distribution method for damping coefficient are used. In results of analyses, it is turned out to be that hybrid isolated building are more efficient than other passive vibration control systems. However, in some earthquakes, it is seen to give close results each of all vibration control systems.