A new analysis method for polymer-confined concrete columns

Ouyang, Y., Lo, S. H., Kwan, A. K. H. and Ho, J. C. M. (2016) A new analysis method for polymer-confined concrete columns. Proceedings of the ICE - Structures and Buildings, 169 12: 892-911. doi:10.1680/jstbu.15.00140

Author Ouyang, Y.
Lo, S. H.
Kwan, A. K. H.
Ho, J. C. M.
Title A new analysis method for polymer-confined concrete columns
Journal name Proceedings of the ICE - Structures and Buildings   Check publisher's open access policy
ISSN 1751-7702
Publication date 2016-12-01
Sub-type Article (original research)
DOI 10.1680/jstbu.15.00140
Open Access Status Not yet assessed
Volume 169
Issue 12
Start page 892
End page 911
Total pages 20
Place of publication London, United Kingdom
Publisher I C E Publishing
Language eng
Subject 2205 Civil and Structural Engineering
2215 Building and Construction
Abstract The confining stresses in a concrete column confined with fibre-reinforced polymer (FRP) are uniform across the section and isotropic only when the column is under concentric loading and circular in shape. If the column is under eccentric loading or non-circular in shape, the confining stresses in the column become non-uniform and anisotropic. However, without knowing the confining stresses, it is impossible to predict the structural behaviour of confined concrete columns. To overcome this difficulty, a new finite-element (FE) method was developed based on the most up-to-date lateral strain–axial strain and axial stress–strain constitutive models of concrete. This paper reports on using the method to analyse circular concrete columns confined by FRP under eccentric loading. It was found that, under eccentric loading, the confining stresses are generally smaller at larger eccentricity. Overall, good agreement between the theoretical results and published experimental data was achieved. In theory, the FE method can be applied to concrete columns of any shape and even those provided with lateral reinforcement, as will be elaborated upon in subsequent papers.
Keyword Columns
Composite structures
Design methods & aids
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

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