A Comparative Study on Seismic Analysis of Diagrid and Hexagrid Structural Systems

Abstract

In this present era of population growth and scarcity of available land made engineers and architects to construct high rise building. Lateral loads are considered as most dominant factor in construction of high-rise building. To improve the efficiency of high-rise building, a new structural systems like diagrid and hexa-grid is introduced in this study. Diagrid structural system is the one which resist lateral load by presence of inclined columns in the periphery of the building. Another structural systems like hexa-grid also introduced in this study. Hexa-grid is the presence of hexagonal truss angulated system in the periphery of the building. Like diagrid, hexa-grid also resists lateral load and vertical load by axial action of diagonal and horizontal components in the periphery of the structure. In diagrid and hexa-grid most of the conventional columns are eliminated. In this paper a regular square floor plan of 48 × 48 m and irregular floor plan like C and L type base plan of diagrid and hexa-grid are studied. All structural steel members are designed as per IS 800:2007. The design earthquake load is computed based on the zone factor and their soil types, importance factor and response reduction factor as per IS: 1893-2016. All models are having same 40 storey height and they are compared based on the parameters like displacement, maximum storey drift, storey shear, maximum base shear and steel consumed are considered in this study.