The Structural Engineer > Archive > Volume 85 (2007) > Issues > Issue 10 > Strength and ductility of headed stud connectors welded in modern profiled steel sheeting
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Strength and ductility of headed stud connectors welded in modern profiled steel sheeting

Push tests in Australia have suggested that studs welded in modern trapezoidal decks possess lower resistances and slip capacities than expected. This paper presents the results from a comprehensive research programme consisting of full-scale composite beam and companion push tests. The beams exhibited excellent ductility, and the slip capacity at the shear connection far surpassed the levels considered obtainable by current British and European Standards. Comparisons of load-slip performance show that any brittleness exhibited in push tests is as a result of a deficiency in the standard push specimen rather than the shear connection. For single studs, the beam tests demonstrate that the current UK design practice of using the shoulder height of the deck in BS 5950 to be the most appropriate. Conversely, the performance of pairs of studs in the current research appears to be adversely affected by longitudinal connector spacing. Interim design guidance is proposed for studs in this arrangement. Stephen Hicks, BEng(Hons), PhD(Cantab) Manager, Building Engineering, The Steel Construction Institute, Silwood Park, Ascot, Berks

Author(s): Hicks, Stephen

Keywords: beams;composite construction;shear connectors;studs;decks;bs5950;eurocode4;testing;behaviour