SEISMIC ANALYSIS OF TUBE IN TUBE STRUCTURES WITH DIFFERENT TYPES OF BRACINGS
Keywords:
Tube in Tube structures, Shear Wall, Storey Displacement, Storey drift, Storey Shear.Abstract
The demand of tall buildings is increasing due to increasing population and less availability of land.Tubular structure is a structural system for tall buildings.The main concept of tubular structures is that building is designed in such a way that it acts like a hollow cantilever which is perpendicular to the ground. Tubular structures are of different types of in which tube in tube structure is more suitable for tall buildings. A tube in tube structure consists of two tubes i.e. outer tube and inner tube which are connected by floor slab.The inner tube is shear wall and the outer tube have columns.Since the inner tube is a shear wall, it has an advantage of column free surface.The outer tube carries the lateral loads.Tubular structure is a better structural system because it have less storey displacement and story drift.In this study we will analyse a 30 storey tube in tube structure with different types of bracings like diagonal,X and V bracing by response spectrum analysis on ETABS 2016 software and we will compare the values of storey displacement,storey drift and storey shear.
