Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/68280
Title: Analysis-oriented stress-strain model for concrete under combined FRP-steel confinement
Authors: Teng, JG 
Lin, G
Yu, T
Keywords: RC column
Fiber reinforced polymer (FRP)
Stress-strain model
Confinement
Transverse steel reinforcement
Issue Date: 2015
Publisher: American Society of Civil Engineers
Source: Journal of composites for construction, 2015, v. 19, no. 5, 04014084, p. 1-14 How to cite?
Journal: Journal of composites for construction 
Abstract: Fiber reinforced polymer (FRP) jacketing of reinforced concrete (RC) columns is now a widely accepted strengthening/retrofit technique. The extensive existing research conducted on concrete in FRP-confined RC columns has led to a large number of stress-strain models, but most of these models are applicable only to FRP-confined RC columns with limited transverse steel reinforcement (i.e., steel hoops or spirals). In many RC columns such as those designed following modern design standards, the transverse steel reinforcement may provide significant confinement which needs to be accounted for in design. This paper presents an analysis-oriented stress-strain model for concrete in such columns where the concrete is under combined confinement from the FRP jacket and the transverse steel reinforcement (i.e., FRP-steel-confined concrete). Two alternative versions of the proposed model are proposed to cater for different considerations. Both versions of the proposed model are shown to provide accurate predictions of existing test results and to be superior to the existing models of the same type.
URI: http://hdl.handle.net/10397/68280
ISSN: 1090-0268
EISSN: 1943-5614
DOI: 10.1061/(ASCE)CC.1943-5614.0000549
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