COMPARATIVE STUDY OF SEISMIC PERFORMANCE ANALYSIS OF STEEL STRUCTURES WITH DIFFERENT STRUCTURAL SYSTEM AS PER IS 18168:2023

Abstract

With the progress in codal provision for steel structure design, it had significantly reinforced the durability and flexibility in modern design. With the introduction of new Indian Standard code for design and detailing for steel structure IS 18168:2023 has replaced the earlier provision mentioned in section 12 of IS 800:2007. This study emphasizes on taking into consideration new clauses for design of steel structure and compares these provision through modelling different structural steel systems under seismic event. The structure analyzed on Loading combination defined in new code as well as Load combination outlined in IS1893:2016. The concept of capacity protected element is also introduced in this code which is explored in this study. The code mentions the limiting value of the slenderness ratio at the location of plastic hinge formation. For the current study, G+4 structure is being prepared which is situated in Earthquake Zone IV. ETABS 2019 version is used and results are compared on the parameter such as storey drift, maximum story displacement and base shear value of SMRF, SCBF &; EBF structural system. The beam-column strength ratio is being defined in this code. The finding of this study revealed that SMRF system have maximum storey drift in X direction but least in Y direction. In all three structural system used in this study EBF structural system exhibit the highest base shear while SMRF system shows minimum value of base shear.