대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

대한건축학회 (Architectural Institute of Korea)
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강봉으로 보강된 철근콘크리트 보의 해석 및 설계방법

Analysis and Design Method of Reinforced Concrete Beams Strengthened with Externally Unbonded Steel Rods

  • 이정민 (경북대 건축.토목공학부) ;
  • 신경재 (경북대 건축.토목공학부) ;
  • 이희두 (경북대 건축.토목공학부) ;
  • 이수헌 (경북대 건축.토목공학부)
  • 투고 : 2012.06.27
  • 발행 : 2012.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study presents an analysis design method after evaluating the flexural behavior of reinforced concrete (RC) beams with externally unbonded steel rods. It is necessary to evaluate the plastic hinge length, because the plastic hinge length is important to find the deflection of RC beams strengthened with unbonded rods and predict the maximum strain of steel rods at ultimate state. The analysis of RC beams strengthened with unbonded rods is difficult because the strain of externally unbonded steel rods is an unknown value from the conventional strain compatibility of the section. So it would be obtained from the elongation due to beam deflection using the plastic hinge length. In order to simplify of the analysis of RC beams strengthened, it is assumed that unbonded steel rods are the same as double layer reinforcing of tension steel. This method will provide an appropriate design method of RC beams strengthened for designers.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단, 경북대학교

참고문헌

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