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Title |
Analysis for Nonlinear Behavior of Concrete Panel Considering Steel Bar Buckling
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Authors |
이상섭(Sang-Sup Lee) ; 박금성(Keum-Sung Park) ; 배규웅(Kyu-Woong Bae) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.6.130 |
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Keywords |
매입 철근의 평균 응력도-변형도 관계 ; 철근 좌굴 ; 비선형 해석 ; 팽창각 Average stress-strain relations of embedded bar ; Steel bar buckling ; Nonlinear analysis ; Dilation angle |
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Abstract |
Many constitutive models for concrete have been developed to predict the nonlinear behavior of concrete members considerably. The constitutive model for reinforcing bar that include the tension stiffening effect due to the bond characteristics between steel bars and concrete is being studied but the bilinear model is generally used. It was found that the buckling of the longitudinal reinforcing bars is controlled the nonlinear behavior of hybrid precast concrete panel, which is being developed for core wall. In this study, the constitutive models that can consider the embedding and buckling effects of reinforcing bar are investigated and a new model combing these constitutive models is proposed. In order to verify the proposed model, the analysis results are compared with experimental results of the concrete wall and hybrid precast concrete panel. The analysis of embeddingeffect-only modeling predicted that the deformation increases continually without the decrease in the load carrying capacity. However, the analysis results of proposed model showed good agreement with some experimental results, thus verifying the proposed computational model.
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