Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis Model for Predicting the Flexural Behavior of RC Beam Strengthened with FRP

FRP로 보강된 RC보의 휨거동 예측을 위한 해석모델

  • Hong, Ki-Nam (Department of Civil Engineering, Chungbuk National University) ;
  • Lee, Bong-No (Department of Civil Engineering, Chungbuk National University) ;
  • Han, Sang-Hoon (Department of Civil Engineering, Chungbuk National University)
  • Received : 2011.02.07
  • Accepted : 2011.04.12
  • Published : 2011.04.30
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Abstract

This paper presents a new simple two-dimensional frame finite element able to accurately estimate the load-carrying capacity of reinforced concrete beams flexurally strengthened externally bonded fiber reinforced polymer (FRP) strips and plates. The proposed analysis model considers distributed plasticity with layer-discretization of the cross-sections and the bond-slip behavior of epoxy layer. The proposed model is used to predict the load-carrying capacity and the applied load-midspan deflection response of RC beams subjected to bending loading. Numerical simulations and experimental measurements are compared based on numerous tests available in the literature and published by different authors. The numerically simulated response agree remarkably well with the corresponding experimental results. Thus, the proposed model is suitable for efficient and accurate modeling and analysis of flexural strengthening of RC beams with externally bonded FRP sheets/plates and for practical use in design-oriented parametric studies.

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References

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