VectorBloc column connections under tension: Experimental and numerical studies.

This study investigates the structural performance of the corner column-to-column connection made of VectorBloc under tensile axial load, which links corner columns between two consecutive floors. Nine full-scale specimens, comprising three distinct connection types one Axial Tension Single Column (ATSC) connection and two Axial Tension Bundle Columns (ATBC-MCC and ATBC-BCC) connections were tested under axial tension load. Failure in all specimens resulted from the rupture of Socket-Head-Cap Screws (SHCSs) connecting the upper and lower blocs of the connector. Despite identical SHCSs across all specimens, variations in their positions led to different outcomes due to differing column geometries and resulting load eccentricities. Notably, the eccentricity induced bloc rotation, leading to separation on the tension face. Axial tension single column exhibited the lowest average tensile capacity, while bundle column connections, despite similar section areas, exhibited contrasting load capacities, attributed to varying load eccentricities. A subsequent parametric study, using finite element analysis, was conducted to identify parameters critical for maximizing the tensile load capacity of this column connection. • This paper presents the performance of Vectorbloc connection subjected to axial tension. • This research was completed using full-scale tests and a detailed FE-based parametric study. • The SHCSs play the most important role in the tensile capacity of the connection. • Both eccentricity and parameter d must be minimized to maximise the tensile capacity. • The parameter d is developed and introduced for the first time in this paper. [ABSTRACT FROM AUTHOR]