New Avenue of Achieving Ductility for Reinforced Concrete Members
Publication: Journal of Structural Engineering
Volume 132, Issue 9
Abstract
The flexural deformation of structural members is due to their curvature. For reinforced concrete (RC) members, this curvature depends on the tensile strain of the reinforcement and the compressive strain of the concrete. As concrete is a brittle material with little ductility, RC members achieve ductility and adequate deformation capacity mainly through the tensile straining or yielding of the reinforcement. When the tensile straining of the reinforcement is limited, such as in the case of over-reinforced RC beams and RC columns with large axial loads, whereby the tensile reinforcement does not yield and the member fails due to concrete crushing, the ductility of the member is limited. The application of high-strength steel or fiber reinforced polymer reinforcement significantly reduces the ductility of the tensile reinforcement, which results in a substantial reduction in the ductility of the structural member. Existing methods for improving the ductility of concrete structures with nonductile reinforcement are not satisfactory. A new scheme of providing ductility to RC members through compressive yielding instead of tensile yielding is developed and introduced in this paper. The effectiveness of the new scheme is illustrated by experimental testing of RC beams. The successful application of this novel technique may pave the way for a new field of research and application of concrete structures.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgment
The work described in this technical note was fully supported by a grant from City University of Hong Kong (Project No. UNSPECIFIED7001610).
References
Naaman, A. E. (2003). “FRP reinforcements in structural concrete: assessment, progress and prospects.” Proc., 6th Int. Symp. on FRP Reinforcement for Concrete Structures, World Scientific, Singapore, 1–24.
Paulay, T., and Priestley, M. J. N. (1992). Seismic design of reinforced concrete and masonry buildings, Wiley, New York.
Wu, Y. F., Oehlers, D. J., and Griffith, M. C. (2002). “Partial interaction analysis of composite beam/column members.” Mech. Struct. Mach., 30(3), 309–332.
Xiao, Y., and Martirossyan, A. (1998). “Seismic performance of high-strength concrete columns.” J. Struct. Eng., 124(3), 241–251.
Information & Authors
Information
Published In
Copyright
© 2006 ASCE.
History
Received: Dec 30, 2004
Accepted: Sep 27, 2005
Published online: Sep 1, 2006
Published in print: Sep 2006
Notes
Note. Associate Editor: Yan Xiao
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.