Behavior of Composite Concrete Beams with Smooth Interface
Publication: Journal of Structural Engineering
Volume 127, Issue 4
Abstract
Design and detailing requirements for composite concrete beams are specified in clause 17.5 of building code 318 of the American Concrete Institute. These requirements rely on monolithic action of the entire cross section to develop flexural and shear resistance, and for deflection control. Detailing of the interface between the precast web and cast-in-place flange to resist horizontal shear in a composite concrete beam is crucial in developing a monolithic action for such beams. This paper presents the results of recent research on the behavior of composite concrete beams with a smooth interface. Current provisions of the American Concrete Institute's code on flexural strength, shear strength, and deflection characteristics are found to be satisfactory. However, the code clauses dealing with horizontal shear are found to be very conservative. Based on test results, an equation to represent the shear transfer strength of a smooth interface is developed. Suitable suggestions are made for consideration during the future revisions to design codes.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
American Concrete Institute (ACI). ( 1999). “Building code requirement for reinforced concrete.” ACI 318-M99, Detroit.
2.
American Institute of Steel Construction (AISC). ( 1993). Manual of steel construction—Load and resistance factor design, 2nd Ed., Chicago.
3.
Birkeland, P. W., and Birkeland, H. W. ( 1966). “Connections in precast concrete construction.” ACI J., March, 345–367.
4.
Bryson, J. O., and Carpenter, E. F. ( 1970). “Flexural behavior of prestressed concrete composite tee beams.” Build. Sci. Ser. 31, U.S. Dept. of Commerce Publ., National Bureau of Standards.
5.
Canadian Standards Association (CSA). ( 1994). “Design of concrete structures for buildings.” CSA A23.3, Rexdale, Ont., Canada.
6.
Tech. Bull. 76-B4, Concrete Technology Associates, Washington, D.C.
7.
Desayi, P., and Krishnan, S. ( 1964). “Equation for the stress-strain curve of concrete.” ACI J., 61(3), 345–350.
8.
Gaston, J. R., and Kriz, L. B. ( 1964). “Connections in precast concrete structures—Scarf joints.” PCI J., June, 37–59.
9.
Grossfield, B., and Birnstiel, C. ( 1962). “Tests of T-beams with precast webs and cast-in-place flanges.” ACI J., June, 843–851.
10.
Hanson, N. W. ( 1960a). “Precast-prestressed concrete bridges 2. Horizontal shear connections.” PCI J., 2(2), 38–58.
11.
Hanson, N. W. ( 1960b). “Precast-prestressed concrete bridges 2. Horizontal shear connections.” PCI Bull. D35, Precast/Prestressed Concrete Institute, Chicago.
12.
Loov, R. E., and Patnaik, A. K. ( 1994). “Horizontal shear strength of composite concrete beams with a rough interface.” PCI J., January-February, 48–69.
13.
Mattock, A. H. ( 1977a). “Author's closure to `Design proposals for reinforced concrete corbels' by A. H. Mattock.” PCI J., March-April, 104–109.
14.
Mattock, A. H. ( 1977b). “Reader comments to `Considerations for the design of precast concrete bearing wall buildings to withstand abnormal loads' by PCI Commitee on Precast Concrete Bearing Wall Buildings.” PCI J., May-June, 104–107.
15.
Mast, R. F. ( 1968). “Auxiliary reinforcement in concrete connections.” ASCE J., June, 1485–1505.
16.
Nossier, S. B., and Murtha, R. N. ( 1971). “Ultimate horizontal shear strength of prestressed split beams.” Tech. Rep. R707, National Technical Information Service, Springfield, Va.
17.
Patnaik, A. K. ( 1992). “Horizontal shear strength of composite concrete beams with a rough interface.” PhD thesis, Dept. of Civ. Engrg., Univ. of Calgary, Calgary, Alta., Canada.
18.
Patnaik, A. K. (1999). “Longitudinal shear strength of composite beams with a rough interface and no ties.”Australian J. Struct. Engrg., 1(3), 157–166.
19.
Patnaik, A. K. ( 2000). “Discussion of `Evaluation of ACI 318-95 shear-friction provisions' by R. Valluvan, M. E. Kreger, and J. O. Jirsa.” ACI Struct. J., May-June.
20.
PCI design handbook, 4th Ed., Precast/Prestressed Concrete Institute, Chicago.
21.
Raths, C. H. ( 1977). “Reader comments to `Design proposals for reinforced concrete corbels' by A. H. Mattock.” PCI J., March-April, 93–98.
22.
Revesz, S. ( 1953). “Behavior of composite T-beams with prestressed and unprestressed reinforcement.” ACI J., February, 595–592.
23.
Saemann, J. C., and Washa, G. W. ( 1964). “Horizontal shear connections between precast beams and cast-in-place slabs.” ACI J., November, 1383–1408.
24.
Shaikh, A. F. ( 1978). “Proposed revisions to shear-friction provisions.” PCI J., March-April, 12–21.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 127 • Issue 4 • April 2001
Pages: 359 - 366
History
Received: May 10, 2000
Published online: Apr 1, 2001
Published in print: Apr 2001
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.