Finite element analysis of axially loaded FRP-confined rectangular concrete columns

Lo, S. H., Kwan, A. K. H., Ouyang, Y. and Ho, J. C. M. (2015) Finite element analysis of axially loaded FRP-confined rectangular concrete columns. Engineering Structures, 100 253-263. doi:10.1016/j.engstruct.2015.06.010


Author Lo, S. H.
Kwan, A. K. H.
Ouyang, Y.
Ho, J. C. M.
Title Finite element analysis of axially loaded FRP-confined rectangular concrete columns
Journal name Engineering Structures   Check publisher's open access policy
ISSN 0141-0296
1873-7323
Publication date 2015-10-01
Sub-type Article (original research)
DOI 10.1016/j.engstruct.2015.06.010
Open Access Status Not Open Access
Volume 100
Start page 253
End page 263
Total pages 11
Place of publication Kidlington, United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Abstract Fibre-reinforced polymer (FRP) offers an effective and convenient means to strengthen existing RC columns. However, classical mechanics could not have an accurate prediction of the lateral strain due to axial load, hence an assessment on the overall confinement effects of the FRP. The finite element (FE) method, on the other hand, can give a full picture of the stress and the strain developed at a typical cross-section from linear elastic to ultimate failure loads. In this paper, a finite element model for the nonlinear analysis of FRP-confined concrete columns is presented, in which concrete elements are formulated based on advanced constitutive models recently developed, and it is verified against specimens with rectangular sections from existing experimental studies. As a result, the non-uniform and anisotropic confinement effects within rectangular sections of different shapes are determined, and their significance on the overall behaviour of axially loaded concrete columns could be assessed.
Keyword Finite element
FRP-confined concrete
Rectangular sections
Stress-strain relationship
Compressive behavior
Constitutive model
Strength
Square
Tubes
Performance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2016 Collection
 
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