콘크리트학회논문집 (Journal of the Korea Concrete Institute)

  • 제25권6호
  • /
  • Pages.631-639
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  • 2013
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  • 1229-5515(pISSN)
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  • 2234-2842(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
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하이브리드 프리캐스트 보-기둥 접합부의 해석적 연구

Analytical Study on Hybrid Precast Concrete Beam-Column Connections

  • 최창식 (한양대학교 건축공학과) ;
  • 김승현 (한양대학교 건축공학과) ;
  • 최윤철 (청운대학교 건축설비소방학과) ;
  • 최현기 (한양대학교 건축공학과)
  • Choi, Chang-Sik (Dept. of Architectural Engineering, Hanyang University) ;
  • Kim, Seung-Hyun (Dept. of Architectural Engineering, Hanyang University) ;
  • Choi, Yun-Cheul (Dept. of Architectural Environmental Engineering and Building Service, ChungWoon Univ.) ;
  • Choi, Hyun-Ki (Dept. of Architectural Engineering, Hanyang University)
  • 투고 : 2013.06.26
  • 심사 : 2013.08.13
  • 발행 : 2013.12.31
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초록

이 연구에서는 기존에 수행된 시공성과 경제성이 향상되고 중진 지역에서 사용 가능한 새로운 프리캐스트 콘크리트 보-기둥 접합상세의 비선형 유한요소해석이 수행되었다. 해당 상세는 복합구조를 기반으로 함으로써 기둥 내에는 각관을 보유하고 있으며 보에는 강판이 매입되어 있는 복잡한 단면을 보유하고 있다. 또한 콘크리트와 강재뿐만 아니라 ECC라는 새로운 재료를 사용함에 따라 요소의 선택 및 재료모델의 결정에 대한 방법론을 제시하였다. 비선형 유한요소해석은 상용 유한요소해석 프로그램인 ABAQUS를 통해 수행되었으며 요소 및 재료 모델은 ABAQUS에서 제공하는 모델들을 사용하였다. 비선형 유한요소해석 결과 기 수행되었던 실험 결과에 유사하거나 보수적으로 평가함으로써 변수분석에 사용할 수 있을 것으로 판단하였다. 구축된 유한요소해석 모델을 통해 해당 상세의 성능에 대한 압축력의 영향, 휨강도비의 영향에 대해 분석하였다. 압축력의 경우 기둥 압축강도의 10~20%에서 가장 좋은 성능을 발휘할 수 있었으며, 휨강도비 1.2 이상에서 기둥의 항복 없이 보의 소성힌지를 유도할 수 있음을 확인하였다.

Non-linear finite element analysis for newly developed precast concrete details for beam-to-column connection which can be used in moderate seismic region was carried out in this study. Developed precast system is based on composite structure and which have steel tube in column and steel plate in beam. Improving cracking strength of joint under reversed cyclic loading, joint area was casted with ECC (Engineering Cementitious Composites). Since this newly developed precast system have complex sectional properties and newly developed material, new analysis method should be developed. Using embedded elements and models of non-linear finite element analysis program ABAQUS previously tested specimens were successfully analyzed. Analysis results show comparatively accurate and conservative prediction. Using finite element model, effect of axial load magnitude and flexural strength ratio were investigated. Developed connection have optimized performance under axial load of 10~20% of compressive strength of column. Plastic hinge was successfully developed with flexural strength ratio greater than 1.2.

키워드

참고문헌

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