Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Evaluation of Mechanical Joint Structural Performance through Actual Performance Testing of PC Connections

PC 접합부의 실물 성능실험을 통한 기계식이음 구조성능 평가

  • Kim, Jae Young (Deep Learning Architecture Research Center, Department of Architectural Engineering, Sejong University) ;
  • Kim, Yong Nam (Mirae Structural Engineering Co., Ltd.,) ;
  • Seo, Min Jung (Mirae Structural Engineering) ;
  • Kim, Beom Jin (Jisan Group) ;
  • Kim, Sung Jig (Department of Architectural Engineering, Keimyung University) ;
  • Lee, Kihak (Deep Learning Architecture Research Center, Department of Architectural Engineering, Sejong University)
  • 김재영 (세종대학교 건축공학과 딥러닝 건축연구소) ;
  • 김용남 ((주)미래구조엔지니어링) ;
  • 서민정 ((주)미래구조엔지니어링) ;
  • 김범진 ((주)지산개발) ;
  • 김승직 (계명대학교 건축공학과) ;
  • 이기학 (세종대학교 건축공학과 딥러닝 건축연구소)
  • Received : 2023.12.29
  • Accepted : 2024.02.16
  • Published : 2024.05.01
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Abstract

In this study, the SBC system, a new mechanical joint method, was developed to improve the constructability of precast concrete (PC) beam-column connections. The reliability of the finite element analysis model was verified through the comparison of experimental results and FEM analysis results. Recently, the intermediate moment frame, a seismic force resistance system, has served as a ramen structure that resists seismic force through beams and columns and has few load-bearing walls, so it is increasingly being applied to PC warehouses and PC factories with high loads and long spans. However, looking at the existing PC beam-column anchorage details, the wire, strand, and lower main bar are overlapped with the anchorage rebar at the end, so they do not satisfy the joint and anchorage requirements for reinforcing bars (KDS 41 17 00 9.3). Therefore, a mechanical joint method (SBC) was developed to meet the relevant standards and improve constructability. Tensile and bending experiments were conducted to examine structural performance, and a finite element analysis model was created. The load-displacement curve and failure pattern confirmed that both the experimental and analysis results were similar, and it was verified that a reliable finite element analysis model was built. In addition, bending tests showed that the larger the thickness of the bolt joint surface of the SBC, the better its structural performance. It was also determined that the system could improve energy dissipation ability and ductility through buckling and yielding occurring in the SBC.

Keywords

Acknowledgement

본 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단(NRF-2020R1A2C2007195)과 2024년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업(RS-2023-00271991)임.이에 감사드립니다.

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