Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21675
Title: Strain efficiency of FRP jackets in FRP-confined concrete-filled circular steel tubes
Authors: Li, SQ
Chen, JF
Bisby, LA
Hu, YM
Teng, JG 
Keywords: Concrete-filled steel tubes
Fiber-reinforced polymer (FRP) composites
Finite element analysis
Strain efficiency
Strengthening
Issue Date: 2012
Publisher: World Scientific
Source: International journal of structural stability and dynamics, 2012, v. 12, no. 1, p. 75-94 How to cite?
Journal: International journal of structural stability and dynamics 
Abstract: The confinement of concrete columns using fiber-reinforced polymer (FRP) jackets or wraps is a popular structural retrofitting technique. More recently, the benefits of FRP confinement of concrete-filled steel tubes have also been explored by researchers. Failure of such FRP-confined concrete-filled steel tubes is usually governed by the rupture of the FRP jacket in the hoop direction. However, the observed FRP hoop strain at failure (i.e. the hoop rupture strain) is typically lower than the ultimate tensile strain from a flat coupon test. Many factors may contribute to this phenomenon, one of which is the geometrical discontinuities at both the starting and finishing ends of the wrapping process commonly used to form an FRP jacket. This paper examines the effect of these geometrical discontinuities on the hoop rupture strain of FRP jackets in FRP-confined concrete-filled circular steel tubes. Detailed finite element (FE) analyses conducted using both linear elastic and elastic-perfectly plastic adhesive constitutive models are presented. Comparison between the FE predictions and available test results shows that the hoop rupture strains of FRP jackets predicted by FE analysis using an elastic-perfectly plastic adhesive model are in reasonable agreement with the test results. The influence of parameters such as the FRP thickness, FRP orthotropy, FRP elastic modulus, adhesive yield strength, adhesive thickness, and column size are examined.
URI: http://hdl.handle.net/10397/21675
ISSN: 0219-4554
EISSN: 1793-6764
DOI: 10.1142/S0219455412004574
Appears in Collections:Conference Paper

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

14
Last Week
0
Last month
1
Citations as of Oct 11, 2017

WEB OF SCIENCETM
Citations

8
Last Week
0
Last month
0
Citations as of Oct 18, 2017

Page view(s)

70
Last Week
0
Last month
Checked on Oct 16, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.