Splitting Induced by Shear Connectors in Composite Beams
Publication: Journal of Structural Engineering
Volume 115, Issue 2
Abstract
The longitudinal shear flow in composite steel and concrete beams is transferred across the steel‐flange/concrete‐slab interface at a discrete number of points by the dowel action of individual connectors. The dispersal of these concentrated loads into the concrete slab induces lateral tensile forces in the slab, which may cause the slab to split and lead to a loss of interaction and of shear strength. An analysis of 50 reinforced and unreinforced push‐out tests that failed by splitting, and finite element model studies of the shear flow in composite beams, have led to a method of predicting the occurrence of splitting due to the local action of individual connectors and the global action of groups of connectors. It has been found that transverse reinforcement does not prevent splitting but limits the extent of the split and hence limits the loss of interaction and shear connection.
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References
1.
BS5400: Part 5. Steel, concrete and composite bridges. (1979). British Standards Institution, London, England.
2.
Chapman, J. C. (1964). “Composite construction in steel and concrete—the behaviour of composite beams.” The Structural Engineer, London, England, 42(4), 115–125.
3.
Davies, C. (1969). “Tests on half‐scale steel‐concrete composite beams with welded stud connectors.” The Structural Engineer, London, England, 47(1), 29–40.
4.
“Eurocode No. 4: Common unified rules for composite steel and concrete structures, draft for national comment.” Report EUR 9886EN. (1985). Commission of European Communities, Luxembourg, Luxembourg.
5.
Johnson, R. P., and Buckby, R. J. (1986). Composite structures of steel and concrete, Vol. 2: Bridges, 2nd Ed., Collins, London, England.
6.
Johnson, R. P., and Oehlers, D. J. (1981). “Analysis and design for longitudinal shear in composite T‐beams.” Proc. Inst. Civ. Engrs., Part 2, 71, 989–1021.
7.
Johnson, R. P., and Oehlers, D. J. (1982). “Design for longitudinal shear in composite L beams.” Proc. Inst. Civ. Engrs., Part 2, 73, 147–170.
8.
Kullman, R. B., and Hosain, M. U. (1985). “Shear capacity of stub‐girders: Full scale tests.” J. Struct. Engrg., ASCE, 111(1), 56–75.
9.
Leonhardt, F. (1964). Prestressed concrete, design and construction. 2nd Ed., Wilhelm Ernst and Sohn, Berlin‐Munich, Federal Republic of Germany.
10.
Mattock, A. H., and Hawkins, N. M. (1972). “Shear transfer in reinforced concrete—recent research.” P.C.I. J., 17(2), 55–75.
11.
Oehlers, D. J. (1980). “Stud shear connectors for composite beams,” thesis presented to the University of Warwick, at Coventry, England, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Oehlers, D. J. (1981). “Results of tests on 101 push specimens and 4 composite T‐beams.” Research Report CE8, Dept. of Engrg., University of Warwick, Coventry, England.
13.
Oehlers, D. J. (1985). Discussion of “A photoelastic investigation of anchorage bearing stresses,” by Rasheeduzzafar, I. M. Allison, and Saadaun Saad Al‐Saadaun.Mag. Concr. Res., 37(131), 110–113.
14.
Oehlers, D. J., and Coughlan, C. G. (1986). “The shear stiffness of stud shear connections in composite beams.” J. Constr. Steel Res., 6, 273–284.
15.
Oehlers, D. J., and Johnson, R. P. (1981). “The splitting strength of concrete prisms subjected to surface strip or patch loads.” Mag. Concr. Res., 33(116), 171–179.
16.
Oehlers, D. J., and Johnson, R. P. (1987). “The strength of stud shear connections in composite beams.” The Structural Engineer, London, England, 65B(2), 44–48.
17.
Taylor, R., Plum, D. R., and Papasozomenos, A. G. (1970). “Investigations on the use of deep haunches in composite construction.” Proc. Inst. Civ. Engrs., Part 2, 47, 43–54.
18.
Teraszkiewicz, J. S. (1968). “Static tests on stud shear connectors in haunched slabs.” RRL Report LR223, Road Research Laboratory, Crowthorne, England.
19.
Timoshenko, S. P., and Goodier, J. N. (1970). Theory of Elasticity, 2nd Ed., McGraw Hill Book Co., New York, N.Y.
20.
Toprac, A. A., and Dale, G. E. (1967). “Composite beams with a hybrid Tee section.” J. Struct Engrg., ASCE, 93(5), 309–322.
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Copyright © 1989 ASCE.
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Published online: Feb 1, 1989
Published in print: Feb 1989
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