EXPERIMENTAL INVESTIGATION OF COLD-ROLLED
ALUMINIUM ALLOY 5052-H36 BEAMS
UNDERGOING LOCAL BUCKLING
Le Anh Thi HUYNH 1*, Cao Hung PHAM 1 and Kim J. R. RASMUSSEN 1
1 School of Civil Engineering, The University of Sydney, NSW 2006, Australia
Extrusion is the most common method to produce aluminium structural members. In Australia, aluminium structural solutions recently introduced by BlueScope Permalite consist of aluminium structural Channel (C-) and Zed (Z-) section members produced by using the existing rolling system for cold-formed steel sections. Compared to extrusion, the roll-forming process is energy efficient and faster in product length per minute production leading to economic and environmental benefits. To date, limited research is available on these types of cold-rolled aluminium structures. The paper presents a total of 18 tests conducted in conventional four-point bending configuration with six different types of sections including four different section depths and two different thicknesses. Framed straps were attached to the top and bottom flanges in the pure bending region to enforce failure by local buckling. Lateral restraints were provided to prevent lateral buckling. The calculated ultimate moment capacities are compared with predicted strengths obtained in the Specification for Aluminum Structure 2015 from the Aluminum Association.
Aluminium alloys; Cold-rolled sections; Bending tests; Local buckling.