Creep Effects in Composite Beams with Flexible Shear Connectors
Publication: Journal of Structural Engineering
Volume 118, Issue 8
Abstract
This paper presents a method for the viscoelastic analysis of composite steel‐concrete beams with flexible shear connectors. In particular, the proposed method evaluates the effects of the connection device's deformability on the migration of the stresses from the concrete slab to the steel beam, which occurs with time as a result of creep and shrinkage of the concrete part. The mathematical formulation of this problem involves the equations of equilibrium, compatibility, and constitutive relationships, i.e., an elastic law for the steel part and an integral‐type creep law for the concrete part. Thus, the problem is governed by a coupled system of three equations, of which two are integral‐differential‐type equations. This system of equations is resolved by numerical step‐by‐step techniques. Finally, a numerical analysis is applied to show the influence of the main parameters.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bažant, Z. P. (1972a). “Numerical determination of long‐range stress history from strain history in concrete.” Mat. Struct., 5(27), 135–141.
2.
Bažant, Z. P. (1972b). “Prediction of concrete creep effects using age‐adjusted effective modulus method.” J. Am. Concr. Inst., 69(4), 212–217.
3.
Bažant, Z. P. (1975). “Theory of creep and shrinkage in concrete structures: A precis of recent developments.” Mechanics today 2. Pergamon Press, New York, N.Y.
4.
“CEP‐FIP model code 1990.” (1988). C.E.B. Bulletin d'Information n.190, C.E.B.‐F.I.P. Comité Euro‐International du Beton (CEB), Paris, France.
5.
Chiorino, M. A., Napoli, P., Mola, F., and Koprna, M. (1984). “C.E.B. design manual on structural effects of time dependent behaviour of concrete.” C.E.B. Bulletin d'Information n.142/142 bis, Georgi Publishing Co., Saint‐Saphorin, Switzerland.
6.
Dischinger, F. (1937a). “Unterunchungen uber die Knicksicherheit die elastische Verformung und das Kriechen des Betons bei Bogenbrucken” (in German). Der Bauingenieur, Berlin, Germany, 18(33/34), 487–520.
7.
Dischinger, F. (1937b). “Unteruchungen uber die Knicksicherheit die elastische Verformung und das Kriechen des Betons bei Bogenbrucken” (in German). Der Bauingenieur, Berlin, Germany, 18(35/36), 539–552.
8.
Dischinger, F. (1937c). “Unteruchungen uber die Knicksicherheit die elastische Verformung und das Kriechen des Betons bei Bogenbrucken” (in German). Der Bauingenieur, Berlin, Germany, 18(39/40), 595–621.
9.
“Eurocode n.4: Common unified rules for composite steel and concrete structures.” (1985). Report EUR 9886 EN, Commission of European Communities, Luxembourg, Luxembourg.
10.
Gilbert, R. I. (1989). “Time‐dependent analysis of composite steel‐concrete sections.” J. Struct. Engrg., ASCE, 115(11), 2687–2705.
11.
Load and resistance factor design, specification for structural steel buildings. (1986). American Inst. of Steel Constr. (AISC), Chicago, Ill.
12.
McHenry, D., (1943). “A new aspect of creep in concrete and its application to design.” Proc., American Society for Testing and Materials (ASTM), Philadelphia, Pa., vol. 43, 1069–1086.
13.
Menzies, J. B. (1971). “CP 117 and shear connectors in steel‐concrete composite beams made with normal‐density or lightweight concrete.” The Struct. Engr., 49(3).
14.
Newmark, N. M., Siess, C. P., and Viest, I. M. (1951). “Tests and analysis of composite beams with incomplete interaction.” Proc., Soc. Exp. Stress Anal., 9(1), 75–92.
15.
Oehlers, D. J., and Carroll, M. A. (1988). “Simulation of composite beam subjected to traffic loads.” Proc., Engrg. Found. Conf., ASCE, New York, N.Y., 450–459.
16.
Oehlers, D. J. (1989). “Splitting induced by shear connectors in composite beams.” J. Struct. Engrg., ASCE, 115(2), 341–362.
17.
Oehlers, D. J. (1990). “Deterioration in strength of stud connectors in composite bridge beams.” J. Struct. Engrg., ASCE, 116(12), 3417–3431.
18.
“Prediction of creep, shrinkage and temperature effects in concrete structures.” (1982). Rep. ACI 209 R‐82, ACI Special Publication SP76, American Concrete Inst., Detroit, Mich., 193–300.
19.
“Steel, concrete and composite bridges.” (1979). BS5400:Part 5, British Standards Inst., London, England.
20.
“Steel structures for buildings‐limit states design.” (1984). Canadian Standards Institute CAN3‐S16.1‐M84, Canadian Standards Association, Willowdale, Ontario, Canada.
21.
Trost, H., (1967a). “Auswirkungen des Superpositionsprinzips auf Kreich‐und Relaxations‐Probleme bei Beton und Spannbeton” (in German). Beton‐und‐Stahl‐betonbau, Germany, 62 (10), 230–238.
22.
Trost, H., (1967b). “Auswirkungen des Superpositionsprinzips auf Kreich‐und Relaxations‐Probleme bei Beton und Spannbeton” (in German). Beton‐und‐Stahl‐betonbau, Germany, 62 (11), 261–269.
23.
Van Dalen, K. (1983). “The strength of stud shear connectors at low temperatures.” Canadian J. Civ. Engrg., 10(3), 429–436.
24.
Wright, H. D., (1990). “The deformation of composite beams with discrete flexible connection.” J. Constr. Steel Res., 15 (1&2), 49–64.
25.
Wyatt, T. A. (1989). “Design guide on vibration of floors.” SCI/CIRIA, The Steel Constr. Inst.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 8 • August 1992
Pages: 2063 - 2080
Copyright
Copyright © 1992 ASCE.
History
Published online: Aug 1, 1992
Published in print: Aug 1992
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.