Behaviour and Design of Innovative Connections of Prefabricated CFST Columns under Tension

This paper investigates the tensile behaviour of prefabricated concrete-filled steel tube (PCFST) columns with bolted connections. Innovative column-column (BCC) connections are developed using standard structural bolts to simplify construction process for connection two PCFST columns, especially corner, edge, and interior columns. The BCC in under tension has been investigated, adopting finite element (FE) modelling approach. Parametric studies carried out understand influence bolt arrangements (TB = 4, 6, 7, 8), base plate thickness (tbp 8, 10, 14, 18 mm), diameters (db 16, 18, 20, 24 vertical stiffeners (ths 10 horizontal 12, 13, 15 yield strength (fy,t 380, 450, 550 MPa) on results show that can attain sufficient satisfy requirements recommended AS5100 robustness AS1170. outcome this will be useful practising engineers design CFST tension.