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

Telephone: + 612 4736 0402, Fax: +612 4736 0137, Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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

Telephone: + 612 4736 0228, Fax: +612 4736 0137

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

Locked Bag 1797 Penrith South DC, NSW 1797, Australia

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

 

DOI:10.18057/IJASC.2009.5.1.5

 

View Article   Export Citation:Plain Text | RIS | Endnote

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.


REFERENCES

[1]       Martin, D.A., "Steel-fibre-reinforced Concrete Floors on Composite Metal Decking", Concrete (London), 2003; Vol. 37, No. 8, pp. 31-32.

[2]       Lam, D. and El-Lobody, E., "Behaviour of Headed Stud Shear Connectors in Composite Beam", Journal of Structural Engineering-ASCE, 2005, Vol. 131, No. 1, pp. 96-107.

[3]       Kim, B., Wright, H.D. and Cairns, R., "The Behaviour of Through-deck Welded Shear Connectors: An Experimental and Numerical Study", Journal of Constructional Steel Research, 2001, Vol. 57, No. 12, pp. 1359.

[4]       El-Lobody, E. and Young, B., "Performance of Shear Connection in Composite Beams with Profiled Steel Sheeting", Journal of Constructional Steel Research, 2006, Vol. 62, No. 7, pp. 682-694.

[5]       Lam, D. and Nip, T.F., "Effects of Steel Fibres Reinforcement on Shear Studs Capacity of Composite Beams", Technical Report, School of Civil Engineering, University of Leed, 2002.

[6]       Craig, R.J., Mookerjee, A., Roessler, H., Jr. and Kulik, K., "Steel Reinforced Fiber Concrete Composite", Columbus, OH, USA, 1985, pp. 406-407.

[7]       Robery, P., "Construction of Composite Floor Slabs Using Steel Fibre Reinforced Concrete", Structural Engineer, 2002, Vol. 80, No. 3-24, pp. 15-17.

[8]       Roberts-Wollmann, C.L., Guirola, M. and Easterling, W.S., "Strength and Performance of Fiber Reinforced Concrete Composite Slabs", Journal of Structural Engineering, ASCE, 2004, Vol. 130, No. 3, pp. 520-528.

[9]       Becher, L., "Behaviour and Design of Composite Beams Using Fibre Reinforced Composite Slabs", in Faculty of Engineering, 2005, University of Wollongong, Wollongong, pp. 75.

[10]     Wu, J., "Behaviour and Design of Composite Beams Using Fibre Reinfroced Composite Slabs", in Faculty of Engineering, 2006, University of Wollongong, Wollongong, pp. 191.

[11]     British Standards Institution, "Design of Composite Steel and Concrete Structures, Part 1.1 General Rules and Rules for Buildings, British Standard Institute, London; ENV 1994-1-1; 2004.

[12]     Karlsson and Sonrensen, "Analysis User's Manual Version 6.5, Hibbitt, Pawtucket, R.I., 2006. [13] Karlsson and Sonrensen, "User's Manual Version 6.5", Hibbitt, Pawtucket, R.I., 2006.

[14]     Karlsson and Sonrensen, "Theory manual version 6.5", Hibbitt, Pawtucket, R.I., 2006.

[15]     Carreira, D. and Chu, K., "Stress-strain Relationship for Plain Concrete in Compression", Journal of ACI Structural, 1985; Vol. 82, No. 11, pp. 797-804.

[16]     Liang, Q., Uy, B., Bradford, M.A. and Ronagh, H.R., "Ultimate Strength of Continuous Composite Beams in Combined Bending and Shear", Journal of Constructional Steel Research, 2004, Vol. 60, pp. 1109-1128.

[17]     Lok, T. and Xiao, J., "Flexural Strength Assessment of Steel Fiber Reinforced Concrete", Journal of Materials in Civil Engineering, 1999, Vol. 11, No. 3, pp. 188-196.

[18]     Swamy, R.N. and Al-Ta'an, S.a., "Deformation and Ultimate Strength in Flexural of Reinfroced Concrete Beams Made with Steel Fiber Concrete," Journal of ACI Structural, 1981, Vol. 78, No. 36, pp. 395-405.

[19]     Hassoun, M.N. and Sahebjam, K., "Plastic Hinge in Two-span Reinforced Concrete Beams Containing Steel Fibers", in Proceeding Canada Society of Civil Engineering, Canada, 1985, pp. 119-139.

[20]     Lok, T.S. and Xiao, J.R., "Tensile Behaviour and Moment-curvature Relationship of Steel Fibre Reinforced Concrete", Magazine of Concrete Research, 1998, Vol. 50, No. 4, pp. 359-368. [21] Hannant, D.J., "Fiber Cement and Fiber Concrete", New York, Wiley, 1978.

[22]     Loh, H.Y., Uy, B. and Bradford, M.A., "The Effects of Partial Shear Connection in the Hogging Moment Region of Composite Beams Part II - Analytical Study", Journal of Constructional Steel Research, 2003, Vol. 60, pp. 921-962.

[23]     Aribert, J. and Labib, A., "Modèle calcul èlasto-plastique de pustres mixtes a connexion partielle", Journal of Construct Metallique, 1982, Vol. 4, pp. 3-51.

[24]     Johnson, R. and Molenstra, N., "Partial Shear Connection in Composite Beams for Building", in Proceeding Institute Civil Engineer, London, 1991, pp. 679-704.

[25]     Gattesco, N. and Giuriani, E., "Experimental Study on Stud Shear Connectors Subjected to Cyclic Loading", Journal of Constructional Steel Research, 1996, Vol. 38, No. 1, pp. 1-21.

[26]     Yam, L.C.P., "Design of Composite Steel-concrete Structures", London, Surrey University Press, 1981.

[27]     AS 2327, A.S. Composite Structures, Part 1: Simply Supported Beams, Standard Australia International, 2003, AS 2327, pp. 1-2003.

[28]     British Standards Institute, "Design of Composite Steel and Concrete Structures", Part 1.1 General Rules and Rules for Buildings, British Standard Institute, London; ENV 1994-1-1; 2004. [29] AISC, Load and Resistance Factor Design Specification (LRFD), American Institute of Steel Construction, 1999.