Structural performance of shear resisting connections between cold-formed steel sections using web cleats of cold-formed steel strip

The paper presents an investigation on the structural performance of shear resisting connections between cold-formed steel sections where web cleats o f cold-formed steel strips are used to attach beams to supporting beams and columns. A total of 24 connection tests with four different connection con figurations were carried out; three modes of failure were identified: failure of fasteners shear buckling of cold-formed steel web cleats or webs of supported beams, and l ateral torsional buckling of cold-formed steel web cleats The structural performance of the cold-formed steel web cleats in four diff erent connection configurations is presented in detail. It is demonstrated that cold-formed steel web cleats may be used with bolts or self-drilling s elf-tapping screws as practical shear resisting connections in building con struction. A set of design rules is formulated in accordance with both BS59 50: Part 5 and Eurocode 3: Part 1.3 after calibration against test data. Th e rationalized usage of cold-formed steel web cleats allows simple and effe ctive connections to be formed between cold-formed steel sections leading t o improved buildability. (C) 2000 Elsevier Science Ltd. All rights reserved .