Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Analytical Study on Hybrid Prefabricated Retrofit Method for Reinforced Concrete Beams

철근 콘크리트 보의 보강을 위한 하이브리드 조립형 보강기법에 관한 해석적 연구

  • 문상필 (경희대학교 건축공학과) ;
  • 이성호 (경희대학교 재정운영본부) ;
  • 이영학 (경희대학교 건축공학과) ;
  • 김민숙 (경희대학교 건축공학과)
  • Received : 2020.07.03
  • Accepted : 2020.07.31
  • Published : 2020.09.15
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Abstract

In this paper, the hybrid prefabricated retrofit method that improve structural performance and reduce construction period was developed by using a finite element analysis. The hybrid prefabricated retrofit method consist of a Z-shaped side plate, a L-shaped lower plate, and a bottom plate containing an steel plate with openings. This shape has advantage that a retrofit method is possible regardless of the size of the beams and a follow-up process such as reinforcement bars placing are not required. The finite element analysis of hybrid Prefabricated retrofit method showed the most ideal stress distribution when the thickness of bottom plate was 10mm, the thickness of the L-shaped lower plate was 5mm, the thickness of the Z-shaped side plate was 2.5mm, and the bolt spacing was 200mm. The bending strength equation of Hybrid prefabricated retrofit method was proposed through the plastic stress distribution method in KDS 41 31 00. The result of Comparison the proposed equation with the finite element analysis, it is determined that the design of hybrid prefabricated retrofit method is possible through the KDS 41 31 00.

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References

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