Study on Bolted and Blind-Bolted Single Shear Connections of Cold-Formed Steel Members

Abstract

INTRODUCTION Cold-formed steel frames with shear-bolted connectionsModern industry increasingly tends towards the socalled industry 4.0, which consists among others on the integration of systems used for design and production. This also applies to steel structures made of coldformed steel (CFS), where LGS / HGS (Light / Heavy Gauge Steel) systems are more and more popular. These are comprehensive solutions combining the most important elements of the production process: from BIM design, through prefabrication to assembly. Individual structural members can be produced on one compact device, which automatically shapes, cuts, makes holes for fasteners and marks them accordingly. Open sections with various dimensions (most often types C and U) cold-formed from zinc-coated high strength steel sheets with a thicknesses in the range of 1.2 to 2 mm (LGS) and 3 to 6 mm (HGS) can be made on the same machine. These systems are characterized by very high precision and production speed reaching over a dozen running meters of profile per minute.