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Title

Modelling eccentrically loaded high-strength concrete columns

Author(s)

Lokuge, W. P.;  Setunge, S.;  Sanjayan, J. G.

Abstract

Based on a confined concrete model for concentric static loading, an analytical method is proposed to predict the behaviour of laterally confined concrete columns subjected to eccentric static loading. Theoretical predictions are verified against the experimental studies reported in the literature. Normal, medium and high-strength concrete were used. Although much research has been reported in the literature concerning eccentric loading of confined concrete columns, there exists a controversial issue about the effect of strain gradient. This method fully incorporates the effect of strain gradient on the lateral confining pressure exerted by transverse reinforcement. It includes modifications for coefficient of effectiveness, and the fact that cover concrete continues to carry load even after spalling. By incorporating the variables, which affect the moment curvature behaviour of laterally confined eccentrically loaded columns, the analytical procedure described here gives a superior alternative to use of a different stress-block for concrete under a strain gradient.

Publication type

Journal article

Source

Magazine of Concrete Research, Vol. 55, no. 4 (Aug 2003), pp. 331-341

Publication year

2003

FOR Code(s)

0905 Civil Engineering

Keyword(s)

Concrete construction;  Concretes;  High-strength concretes;  Strain;  Structural loads

Publisher

ICE Publishing

ISSN

0024-9831

Publisher URL

http://dx.doi.org/10.1680/macr.55.4.331.37587

Copyright

Copyright © 2003 Thomas Telford Ltd. This paper was originally published in the Magazine of Concrete Research and is available from: http://www.concrete-research.com. Published version reproduced here with the kind permission of the publisher.

Full text

Peer reviewed