철근 콘크리트 보의 보강을 위한 하이브리드 조립형 보강기법에 관한 해석적 연구 = Analytical Study on Hybrid Prefabricated Retrofit Method for Reinforced Concrete Beams

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

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7 Al-Salloum, Y. A., "Textile-Reinforced Mortar versus FRP as Strengthening Material for Seismically Deficient RC Beam-Column Joints" 15 (15): 920-933, 2011

8 "KDS 41 31 00, Korean Design Standard"

9 Hadi, M. N. S., "Experimental Investigation of Composite Beams Reinforced with GFRP I-Beam and Steel Bars" 144 : 462-474, 2017