Comparative Analysis Of Diagrid Building With Conventional Building Against Seismic Activity By E-TABS Software

Civil Engineering

The Diagrid are perimeter structural configurations characterized by a narrow grid of diagonal members which are involved both in gravity and in lateral load resistance. Now a days a renewed interest in and a widespread application of Diagrid is registered with reference to large span and high rise buildings, particularly when they are characterized by complex geometries and curved shapes, sometimes by completely free forms. Diagonal members in Diagrid structures act both as inclined columns and as bracing elements, and carry gravity loads as well as lateral forces, Due to their triangulated configuration, mainly internal axial forces arise in the members, thus minimizing shear racking effects. The static and dynamic analysis is done with the help of computer software E- TAB Nonlinear 9.7.2 for two different models. Model1. - Simple frame Model2. - Diagrid Frame Result of this analysis indicated, Model-1 has very large displacement than Model-2. Model 2 is More Stiff than Model 1.The story drift are checked according to clause no. 7.11.1 IS 1893(Part-I):2002, Page No.27 in table no. 4.5, and it is found that drifts for Model 2 are more safe.

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