Time-Dependent Response of Spatially Curved Steel-Concrete Composite Members. II: Curved-Beam Experimental Modeling
Publication: Journal of Structural Engineering
Volume 139, Issue 12
Abstract
This paper presents a comprehensive experimental study of the time-dependent creep and shrinkage behavior of a simply supported steel-concrete composite beam that is curved in its plan; it is a companion to the first paper that presented a numerical model for spatially curved members for which a beam curved in plan is a limiting case. The full-scale beam was tested under sustained uniformly distributed loading for approximately 250 days; its time-dependent deformations and strains were monitored throughout the period of loading. Separate companion concrete specimens were tested under the same ambient conditions as the test beam to determine the creep and shrinkage characteristics of the concrete component of the beam. The test observations show that the creep and shrinkage behavior of the concrete component has a significant effect on the long-term response of curved composite beams. The experiment also provides benchmark data to test the validity of theoretical models and shows that the developed numerical technique is able to predict the deflections of the test beam acurately; hence, it is able to provide a reliable computational model from which to formulate design guidance.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The work reported in this paper was supported by the Australia Research Council through a Discovery Project (DP0770739) awarded to the second author, as well as an Australian Laureate Fellowship. The authors also acknowledge the laboratory staff at the Heavy Structures Research Laboratory at the University of New South Wales for their assistance with the testing program.
References
Bradford, M. A., and Gilbert, R. I. (1991). “Time-dependent behaviour of simply-supported steel concrete composite beams.” Mag. Concr. Res., 43(157), 265–274.
Bradford, M. A., and Gilbert, R. I. (1992). “Composite beams with partial interaction under sustained loads.” J. Struct. Eng., 118(7), 1871–1883.
Colville, J. (1973). “Test of curved steel-concrete composite beams.” J. Struct. Div., 99(7), 1555–1570.
Comité Euro-International du Béton—Fédération International de la Précontrainte. (1993). Mode code 1990: Design code, Thomas Telford, London.
Erkmen, R. E., and Bradford, M. A. (2011a). “Time-dependent creep and shrinkage analysis of composite beams curved in-plan.” Comput. Struct., 89(1–2), 67–77.
Erkmen, R. E., and Bradford, M. A. (2011b). “Nonlinear quasi-viscoelastic behaviour of composite beams curved in-plan.” J. Eng. Mech., 137(4), 238–247.
Gilbert, R. I., and Guo, X. H. (2005). “Time-dependent defection and deformation of reinforced concrete flat slabs—An experimental study.” ACI Struct. J., 102(3), 363–373.
Liu, X., Bradford, M. A., and Erkmen, R. E. (2013). “Time-dependent response of spatially curved steel-concrete composite members: 1. Computational modeling.” J. Struct. Eng., 139(12), XXX–10.
Oehlers, D. J., and Bradford, M. A. (1995). Composite steel and concrete structural members: Fundamental behaviour, Pergamon, Oxford.
Standards Australia. (1996). “Methods of testing concrete—Part 16: Determination of creep of concrete cylinders in compression.” AS1012, Sydney, Australia.
Standards Australia. (1997). “Methods of testing concrete—Part 17: Determination of the static chord modulus of elasticity and Poisson’s ratio of concrete specimens.” AS1012, Sydney, Australia.
Standards Australia. (1999). “Methods of testing concrete—Part 9: Determination of the compressive strength of concrete specimens.” AS1012, Sydney, Australia.
Standards Australia. (2003). “Composite structures—Part 1: Simply supported beams.” AS2327, Sydney, Australia.
Tan, E. L., and Uy, B. (2009). “Experimental study on curved composite beams subjected to combined flexure and torsion.” J. Constr. Steel Res., 65(8–9), 1855–1863.
Thevendran, V., Shanmugam, N. E., Chen, J. Y., and Liew, J. Y. R. (2000). “Experimental study on steel-concrete composite beams curved in plan.” Eng. Struct., 22(8), 877–889.
Information & Authors
Information
Published In
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Feb 6, 2012
Published online: Aug 20, 2012
Accepted: Mar 14, 2013
Published in print: Dec 1, 2013
Discussion open until: Feb 3, 2014
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.