한국전산구조공학회:학술대회논문집 (Proceedings of the Computational Structural Engineering Institute Conference)

한국전산구조공학회 (Computational Structural Engineering Institute of Korea)
권호 표지

용접 절단에 의한 긴장력 도입 방법이 프리텐션 부재의 콘크리트 응력에 미치는 영향 분석

The Effect of the Flame Cutting of a Tendon on the Surrounding Concrete in Pretensioned Prestressed Member

  • 김장호 (고려대학교 건축.사회 환경공학과) ;
  • 문도영 (고려대학교 건축.사회 환경공학과 BK21) ;
  • 지광습 (고려대학교 건축.사회 환경공학과) ;
  • 김규선 (한국시설안전기술공단, 교량실) ;
  • 박경래 (삼성건설 토목사업본부 인천대교 설계과)
  • 발행 : 2008.04.17
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초록

This paper describes the dynamic shock effects on the pretensioned concrete member by the detensioning using finite element analysis. The investigation was performed by linear and nonlinear dynamic analysis. In nonlinear dynamic analysis, Brittle Cracking Model was applied for concrete behavior. It was shown that the amplitude of stress wave was significantly decreased when time for cutting of tendon was above 0.05sec. The maximum stress values obtained from linear and nonlinear dynamic analysis was nearly same. However, the position forthe maximum tensile stresses were different.

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