Structural Performance of Partially Confined Concrete-Filled Steel Tubular Columns under Combined Axial and Lateral Cyclic Loadings

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dc.contributor.authorKar, Prasanta
dc.date.accessioned2025-04-16T06:09:46Z
dc.date.available2025-04-16T06:09:46Z
dc.date.issued2023
dc.descriptionSupervisors: Singh, Konjengbam Darunkumar and Borsaikia, Arun Chandra
dc.description.abstractIn this research work, an innovative strengthening technique has been proposed for square and circular CFST columns. An experimental investigation on partially confined concrete-filled steel tubular (PCCFST) square and circular columns (i.e., short inner concrete core confinement near the support), using circular hollow section (CHS) configuration as partial inner confinement, under combined axial and cyclic lateral loadings has been performed. Hysteretic behavior of load, ultimate lateral strength, energy dissipation capacity, and ductility of the PCCFST columns were studied as a function of (a) the ratio of the height of the inner tube to the diameter of the outer tube (0-2.5) and (b) diameter/width ratio of inner tube to outer tube (0.44, and 0.53). Based on the investigation, it has been seen that the height and diameter of the inner CHS have an evident influence on the cyclic performance of the columns. Enhancement of the cyclic performance of PCCFST column with the height of inner CHS beyond 1.5D is not very significant. Based on the limited experimental results herein and code provisions (Eurocode 4 1994), a design rule has been proposed to predict the ultimate lateral strength of the square and circular PCCFST columns.
dc.identifier.otherROLL NO.166104031
dc.identifier.urihttps://gyan.iitg.ac.in/handle/123456789/2876
dc.language.isoen
dc.relation.ispartofseriesTH-3223
dc.titleStructural Performance of Partially Confined Concrete-Filled Steel Tubular Columns under Combined Axial and Lateral Cyclic Loadings
dc.typeThesis
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