Comparative Study on the Seismic Behaviour of Diagrid Structure and Shear Wall Structure

Abstract

The design of the multi-storeyed buildings are primly depends on the lateral loads like earthquake and wind forces acting on them. It is uneconomical to design the whole structure to resist these lateral forces. Hence lateral force resisting systems such as moment resisting frames, bracing systems, shear walls, outriggers and recently diagrids have been introduced. This paper presents the comparative study on the seismic behaviour of diagrid structure and shear wall structure. A diagrid structure and a shear wall structure of 16 stories each are designed with the same design loads and are analysed using response spectrum method. The seismic performances of both the structures are compared with one another. The results shows that the use of diagrids in the structure will reduces the displacements, drifts and storey shear whereas implementation of shear wall in the structure increases the natural time period and reduces the vibration (storey acceleration) of the building caused due to seismic activity.