Steel–Concrete Composite Beams Considering Shear Slip Effects
Publication: Journal of Structural Engineering
Volume 129, Issue 4
Abstract
The present study investigated the effects of shear slip on the deformation of steel–concrete composite beams. The equivalent rigidity of composite beams considering three different loading types was first derived based on equilibrium and curvature compatibility, from which a general formula to account for slip effects was then developed. The predicted results were compared with measurements of six specimens tested in the present study and other available test results for both simply supported and continuous beams. It was found that including slip effects has significantly improved the accuracy of prediction. For typical beams used in practice, shear slip in partial composite beams has a significant contribution to beam deformation. Even for full composite beams, slip effects may result in stiffness reduction up to 17% for short span beams. However, slip effects are ignored in many design specifications that use transformed section method except that American Institute of Steel Construction (AISC) specifications recommend a calculation procedure in the commentary. In the AISC procedure, stress and deflection calculations of partially composite girders are based on effective section modulus and moment of inertia to account for slip, while ignoring slip effects in full composite sections. For full composite sections, the effective section modulus and moment of inertia calculated with the AISC specifications are larger than that of present study, meaning that the specifications are not on the conservative side. For partial composite sections, the AISC predictions are more conservative than the present study.
Get full access to this article
View all available purchase options and get full access to this article.
References
American Association of State Highway and Transportation Officials (AASHTO). (1998). “LRFD bridge design specifications.” Washington, D.C.
American Institute of Steel Construction (AISC). (1993). “Load and resistance factor design.” Chicago.
Ansourian, P. (1981). “Experiments on continuous composite beams.” Proc., Inst. Civ. Eng., 71(2), 25–51.
Chapman, J. C., and Balakrishnan, S.(1964). “Experiments on composite beams.” Struct. Eng., 42(11), 369–383.
Davies, C.(1969). “Test on half-scale steel-concrete composite beams with welded stud connectors.” Struct. Eng., 47(1), 29–40.
Dezi, L., Gara, F., Leoni, G., and Tarantino, A. M.(2001). “Time-dependent analysis of shear-lag effect in composite beams.” J. Eng. Mech., 127(1), 71–79.
Grant, J. A., Fisher, J. W., and Slutter, R. G.(1977). “Composite beams with formed steel deck.” AISC Eng. J.,12(1), 24–43.
Hope-Gill, M. C., and Johnson, R. P. (1976). “Test on three-span continuous composite beams.” Proc., Inst. Civ. Eng., 367–381.
Johnson, R. P. (1975). Composite structures of steel and concrete, Granada Limited.
Li, T. (1984). “Experiments and performance analysis of simply supported steel–concrete composite beam under short-term loading.” Master Thesis, Zhengzhou Institute of Technology, Zhengzhou, China (in Chinese).
Manfredi, G., Fabbrocino, G., and Cosenza, E.(1999). “Modeling of steel-concrete composite beams under negative bending.” J. Eng. Mech., 125(6), 654–662.
McGarraugh, J. B., and Baldwin, J. W. (1971). “Lightweight concrete-on-steel composite beams.” AISC Eng. J.,8(3).
Newmark, N. M., Siess, C. P., and Viest, I. M.(1951). “Test and analysis of composite beams with incomplete interaction.” Exp. Stress Anal.,9(1), 75–92.
Nie, J. G., and Shen, J. M.(1997). “Slip effect on strength of composite steel–concrete beams.” China Civil Eng. J., China Civil Engineering Society,30(1), 31–36 (in Chinese).
Sebastian, W. M., and McConnel, R. E.(2000). “Nonlinear FE analysis of steel–concrete composite structures.” J. Struct. Eng., 126(6), 662–674.
Wang, Q. H., and Nie, J. G.(1992). “Steel–concrete composite beam using regular precast reinforced slab as compression flange.” J. Industrial Building,22(2), 6–9 (in Chinese).
Zhu, P. R. (1989). Principles of steel-concrete composite beams, China Building Industrial Press, Beijing (in Chinese).
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 4 • April 2003
Pages: 495 - 506
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Sep 27, 2001
Accepted: Jun 28, 2002
Published online: Mar 14, 2003
Published in print: Apr 2003
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.