ANALYSIS OF HIGH RAISED STRUCTURES IN DIFFERENT SEISMIC ZONES WITH DIAGRID AND SHEAR WALLS USING E-TABS

Civil Engineering

The evolution of tall structures is based on new structural concepts with newly adopted high strength materials and construction methods have been towards “stiffness” and “lightness”. As per the previous records of earthquakes, there is an increase in the demand for use of earthquake resisting structures. So it is necessary to design and analyze the structures by considering seismic effect. Now-a-days, shear walls are used due to its resisting properties. The application of the shear wall system in reinforced concrete buildings is used to minimize seismic consequences. Besides, the diagrid systems are used for the same reasons in structural buildings. Although both systems are used to overcome the same effects, but two systems will exhibits different behavior against seismic load. The present work is concerned with the comparative study of seismic analysis of multi-storied building with diagrid and shear wall system in different zones. The present study is to understand that the structures need to have suitable Earthquake resisting features to safely resist large lateral forces that are imposed on them during Earthquake. Shear walls and diagrid are efficient and effective in minimizing damage in structures due to earthquake and wind. The study focuses on comparison of performance of diagrids and shear walls in high rise building. Modeling and analysis of the structure is done in ETABS 2016 software in different seismic zones and wind conditions. For analysis various IS codes have been referred, for Gravity load combination IS 456:2000 and for seismic load combinations as per IS1893:2002 (part 1) code is referred. To analyze the structures, the dynamic analysis method is adopted. The response spectrum and Non-linear time history functions are defined to carry out dynamic analysis. The results of models are tabulated and graphically represented and is compared for determining the better performance of building against lateral loads.

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