Comparative Analysis of Diagrid Structural System and Conventional Structural System for High Rise Steel Building
Keywords:
about Diagrid structural system, High rise buildings, storey displacement, storey shear, storey Drift and Time period and storey DriftAbstract
In recent trends, the construction development has been rapidly increasing towards tall building structures. For “stiffness” and
“lightness” to structural system has been evaluated based on new structural concept with newly adopted high strength materials
and construction methods. Recently different structural system like braced tub structure, spaced truss, Diagrid structural system,
etc. Are adopted in tall building due to its structural efficiency and flexibility in architectural planning. Diagrid structure consists
of inclined columns on the exterior surface of building, compared to closely spaced vertical columns in framed tube. In diagrid
structural system lateral loads are resisted by axial action of diagonal (inclined column) compared to bending of vertical columns
in framed tube structure. Lateral shear can be carried by the diagonals on the periphery of building in diagrid structures do not
require core. Analysis of diagrid structural system and conventional structural system for 24 storey building is presented here. A
regular floor plan of 36 m × 36 m size is considered for both structures. ETABS software is used for modelling and analysis of
structural members. All structural members are considered as per IS 800:2007 considering all load combinations. Dynamic along
wind and across wind are considered for analysis of the structure. Similarly, analysis of 36, 48 and 60 storey diagrid structures is
carried out. Comparison of analysis results in terms of time period, storey displacement, storey shear and storey drift with
conventional building is presented in this paper.
