Deformability evaluation of high-strength reinforced concrete columns

Ho, J. C. M. and Pam, H. J. (2010) Deformability evaluation of high-strength reinforced concrete columns. Magazine of Concrete Research, 62 8: 569-583. doi:10.1680/macr.2010.62.8.569

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Author Ho, J. C. M.
Pam, H. J.
Title Deformability evaluation of high-strength reinforced concrete columns
Journal name Magazine of Concrete Research   Check publisher's open access policy
ISSN 0024-9831
Publication date 2010-08-01
Year available 2010
Sub-type Article (original research)
DOI 10.1680/macr.2010.62.8.569
Open Access Status File (Publisher version)
Volume 62
Issue 8
Start page 569
End page 583
Total pages 15
Place of publication London, United Kingdom
Publisher I C E Publishing
Collection year 2010
Language eng
Subject 2205 Civil and Structural Engineering
2215 Building and Construction
2500 Materials Science
Abstract Plastic hinge length and ultimate curvature are the crucial parameters that enable inelastic deformability (deflection and rotation) of reinforced concrete columns to be evaluated. Prediction of deformability beyond the elastic range is important in the performance-based design of earthquake-resistant structures. Although large numbers of tests have been conducted in the past by numerous researchers on reinforced concrete columns subjected to simultaneous axial load and large inelastic displacement, available design tools that enable rapid evaluation of deformability of reinforced concrete columns are still limited. The situation is even worse for high-strength reinforced concrete columns. The objective of this paper is to investigate plastic hinge length and ultimate curvature for deformability evaluation of high-strength reinforced concrete columns. In connection with this, two equations are proposed in this paper for estimating the plastic hinge length and ultimate curvature of high-strength reinforced concrete columns leading to their deformability evaluation. The proposed equations are used to evaluate the theoretical deflection of other researchers' column test specimens, and it is proven that these theoretical deflections mostly underestimate slightly their respective measured deflections. Therefore, the proposed equations can be used for conservative estimation of high-strength reinforced concrete column deformability at an early design stage without performing the tedious load-deflection analysis.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Thu, 23 Oct 2014, 17:50:21 EST by Johnny Ho on behalf of School of Civil Engineering