Investigate the Effect of Floating Column and Composite Transfer Beam Under the Influence of Seismic Forces

Abstract

AbstractFloating column structures are common nowadays in modern multi-storey framed structures and low to medium high rise constructions used for parking space on the ground floor, column-free space in the lobby, reception, entry at showrooms, conference rooms and malls, etc. The current examination explores the impacts of structural irregularity produced by floating columns in different positions of the plan subjected to seismic forces. Such features are undesirable in highly seismic active zones. The floating column acts as a concentrated force on the transfer beam, due to which bending moment increases on the transfer beam. As the bending moment increases the depth of beam also increases. To counter the impact of a floating column, bending moment and depth of beam steel–concrete composite beams are used in the structure. Steel–concrete composite has gained acceptance worldwide as an alternative to concrete constructions. Steel–concrete composite elements are used extensively in modern-day constructions. The steel–concrete composite technique is an efficient, economical and innovative method for seismic resistance for multi-storey buildings. In this study, four models of G + 10 RC structures with and without floating column and transfer beam as composite members are used. The structure is located in seismic zone III, and the soil type is medium soil. Model analysis is carried out by equivalent static method as per IS 1893-2002 using ETABS software. An equivalent static method is used to analyse parameters like lateral displacement, base shear, natural period, storey drift, bending moment of transfer beam and weight of structure results are studied for different models.KeywordsFloating columnComposite transfer beamEquivalent static analysisSeismic forceETABS