Structural performance of inter-module connections in cold-formed steel structures

<p dir="ltr">Various inter-module connections have been studied recently to enhance the constructability and performance of steel-framed modular buildings. Although these connections provide benefits, they do not fully leverage the potential advantages of modular construction, such as quick assembly and reusability. Moreover, designers usually face extra challenges in connecting modules when they are subjected to high loads because of their small thickness, issues of weldability, requirements for reusability and local buckling.</p><p dir="ltr">This research developed three innovative and sustainable connections between shear walls in cold-formed steel modular construction. A series of 62 full-scale experimental tests have been conducted using square hollow sections (SHS) to examine connection capacity and failure mechanism. FEA numerical investigations have also been carried out by analysing 14 models using ABAQUS. It was found that the proposed connections achieve strength requirements to withstand wind lateral loads in mid-rise buildings. They also proved to possess important characteristics like ease of installation, temporary stability during construction, reusability and having a pleasant appearance.</p>