Advanced Steel Construction

Vol.5.No.1.pp.72-95(2009)


EFFECTS OF STEEL FIBRE REINFORCEMENT ON THE BEHAVIOUR OF HEADED STUD SHEAR CONNECTORS FOR COMPOSITE STEEL-CONCRETE BEAMS

 

O.Mirza 1 and B.Uy 2,*

1 PhD Candidate, School of Engineering, University of Western Sydney, Australia

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2 Professor and Head of School of Engineering, University of Western Sydney, Australia

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*(Corresponding author: Email: This email address is being protected from spambots. You need JavaScript enabled to view it.)

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Received: 31 October 2007; Revised: 10 January 2008; Accepted: 16 January 2008

DOI:10.18057/IJASC.2009.5.1.5

 

ABSTRACT:

Composite steel-concrete beams are becoming increasingly popular in multistorey buildings due to their higher span/depth ratio, reduced deflections and increased stiffness value. However, their performance is highly dependent on the load-slip characteristics of the shear connectors. More recently, trapezoidal profiled slabs are becoming increasingly more popular for high rise buildings when compared with solid slabs because they can achieve large spans with little or no propping and they require less concrete and plywood formwork. However, the profiles used to achieve these savings can have a detrimental effect on the shear connector behaviour. This paper describes a nonlinear finite element model developed using ABAQUS to study the behaviour of shear connectors in both solid and profiled steel sheeting slabs.    In addition to analysing the influence of the shear connectors on the structural performance, steel fibres are introduced to further augment the ductility and strength of the shear connection region in the slab. The results obtained from the finite element analyses were verified against experimental results and indicate that the strength and load-slip behaviour are significantly influenced by the inclusion of steel fibres.

 

Keywords:Composite steel-concrete beams; steel fibres; finite element analysis.

 

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