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http://dx.doi.org/10.4334/JKCI.2015.27.1.045

Confinement Effect of Reinforced Concrete Members Using a Parabola-Rectangular Compressive Stress-Strain Relationship  

Choi, Seung Won (Dept. of Civil and Construction, Chosun College of Science & Technology)
Kim, Woo (Dept. of Civil Engineering, Chonnam University)
Publication Information
Journal of the Korea Concrete Institute / v.27, no.1, 2015 , pp. 45-53 More about this Journal
Abstract
In general, RC columns are reinforced by spiral or tied steel and a strength of confined concrete is more increased than this of unconfined concrete. And strength and ductility of column are increased by a confinement effect. A confinement effect is affected by concrete strength, spacing, volume and strength of confinement steel. Many researchers suggested various confinement models which reflected these parameters by many experimental results. In this study, a load-strain relationship is evaluated by a confinement model in EC2, and it is compared with Mander model, Saatchioglu-Razvi model and Cusson et al. model. As results, it is appeared that a confinement model in EC2 is able to apply all kinds of concrete strength and a consistency in sectional analysis can be secured using material models in EC2. In parameter studies using material models in EC2, a confinement effect is more affected by a confinement steel than a concrete strength.
Keywords
confinement effect; EC2; Mander model; Saatchioglu-Razvi model; Cusson et al. model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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