Benchmarking for the inclusion of shear studs in finite element models

Kate Anderson, Martin Gillie

Abstract


There are many aspects of shear stud behaviour that may affect a heated steel-concrete composite structure in fire such as stud layout, ductility and strength; heated material behaviour; loss of composite action through the failure of multiple studs; and so on. This paper attempts to understand the role of shear studs on full structural behaviour in fire during both heating and cooling. Predictions of stud behaviour at ambient temperature using numerical models are first compared to experimental work to benchmark the modelling approach. A good correlation is found. This is followed by the analysis of full structural behaviour in fire where shear stud properties are varied parametrically. Individual shear studs are modelled so it is possible to identify which studs fail and at what point in the fire. The results demonstrate the importance of ensuring continued composite action in fire.


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