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Title |
Confinement Effect of Reinforced Concrete Members Using a Parabola-Rectangular Compressive Stress-Strain Relationship
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Authors |
최승원(Seung Won Choi) ; 김우(Woo Kim) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.1.045 |
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Keywords |
횡구속 효과 ; EC2 ; Mander 모델 ; Saatchioglu-Razvi 모델 ; Cusson 등 모델 confinement effect ; EC2 ; Mander model ; Saatchioglu-Razvi model ; Cusson et al. model |
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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.
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