BBSS RESEARCH

BBSS stands for Blind-Bolted Structural Systems. In a previous Australian Research Council (ARC) sponsored Linkage project entitled " Development of innovative beam-column connections within robust composite steel-concrete structural frames ", which involved three universities (The University of Melbourne, Swinburne University of Technology and The University of Western Sydney) and two manufacturers (Onesteel Australian Tube Mills and Ajax Engineered Fasteners), blind bolts (sometimes called "Oneside fasteners"), which were invented by Dr. Saman Fernando at Ajax Engineered Fasteners, have been used to develop structural connections between steel beams and circular or square hollow section columns. The hollow section columns can either be filled with concrete or remain unfilled. If filled columns are used, a variety of extensions to the blind bolt that have been investigated by researchers at The University of Melbourne can be used to anchor the connection to the concrete within the steel tube, and hence increase the stiffness and strength of the connection.

A further ARC Linkage Grant entitled " Development of efficient, robust and architecturally-flexible structural systems using innovative blind-bolted connections " is close to completion and has determined the structural systems that would best utilise these connections, ones that would be attractive to structural designers because of their resilience, sustainability and efficiency of construction. This project has been between three universities (The University of Melbourne, Swinburne University of Technology and The University of New South Wales) and two manufacturers (Orrcon Steel and Ajax Engineered Fasteners). It will open opportunities for the construction industry to use tubular sections in building construction, the mining industry and infrastructure.