Structural Comparison of Diagrid Building with Tubular Building

Abstract

Today's tall building concept is rooted in architectural features of building geometry along with stiffness and lightness. Hence, architectural concept and structural concept must go hand in hand. Based on this many lateral load resistance systems have been developed. Tubular system is the latest technology in this area. Recently, the high rise building technology relies on this system. Diagrid is another latest invention in this area, which is a mutation of Tubular system. Diagrid is a better choice, where Tubular system failed to fulfil the requirements, especially in the case of complex geometries. In this paper the Diagrid and Tubular buildings are compared in order to study the structural efficiency of both type of buildings. For this purpose, comparison is made among different models of Diagrid building and respective models of Tubular building. 24, 30, 36, 42, 48, 54, 60, 66 storey models of both Diagrid and Tubular buildings are generated in ETABS2015 software and analysed. The loads are taken from IS: 875-1987. The earthquake load is applied as per 1893-2002. The analysis results are compared in terms of 'Displacement', 'Storey drift', 'Time period' and 'Storey shear'. The values of these parameters of Tubular building are found to be larger than that of Diagrid building under same loading condition. The comparison of analysis results revealed that the Diagrid building is structurally more efficient than the Tubular building.