Techno Press

Steel and Composite Structures   Volume 25, Number 4, November20 2017, pages 443-456
Behaviour of bolted connections in concrete-filled steel tubular beam-column joints
Kumari Beena, Kwatra Naveen and Sharma Shruti

Abstract     [Full Text]
    Many authors have established the usefulness of concrete filled steel tubular (CFST) sections as compression members while few have proved their utility as flexural members. To explore their prospective as part of CFST frame structures, two types of connections using extended end plate and seat angle are proposed for exterior joints of CFST beams and CFST columns. To investigate the performance and failure modes of the proposed bolted connections subjected to static loads, an experimental program has been executed involving ten specimens of exterior beam-to-column joints subjected to monotonically increasing load applied at the tip of beam, the performance is appraised in terms of load deformation behaviour of joints. The test parameters varied are the beam section type, type and diameter of bolts. To validate the experimental behaviour of the proposed connections in CFST beam-column joints, finite element analysis for the applied load has been performed using software ATENA-3D and the results of the proposed models are compared with experimental results. The experimental results obtained agree that the proposed CFST beam-column connections perform in a semi-rigid and partial strength mode as per specification of EC3.
Key Words
    concrete filled steel tubular columns; extended end plate (connection); seat angle (connection); through bolts; monotonic loading
Kumari Beena, Kwatra Naveen and Sharma Shruti: Department of Civil Engineering, Thapar University, Patiala 147-001, India

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