Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Quasi-Static and Shaking Table Tests of Precast Concrete Structures Utilizing Clamped Mechanical Splice

가압고정 기계적이음을 활용한 프리캐스트 콘크리트 구조물의 준정적 및 진동대 실험

  • Sung, Han Suk (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Ahn, Seong Ryong (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Park, Si Young (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Kang, Thomas H.-K. (Dept. of Architecture and Architectural Engineering, Seoul National University)
  • 성한석 (서울대학교 건축학과) ;
  • 안성룡 (서울대학교 건축학과) ;
  • 박시영 (서울대학교 건축학과) ;
  • 강현구 (서울대학교 건축학과)
  • Received : 2022.09.06
  • Accepted : 2022.11.29
  • Published : 2023.01.01
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Abstract

A new clamped mechanical splice system was proposed to develop structural performance and constructability for precast concrete connections. The proposed mechanical splice resists external loading immediately after the engagement. The mechanical splices applicable for both large-scale rebars for plants and small-scale rebars for buildings were developed with the same design concept. Quasi-static lateral cyclic loading tests were conducted with reinforced and precast concrete members to verify the seismic performance. Also, shaking table tests with three types of seismic wave excitation, 1) random wave with white noise, 2) the 2016 Gyeongju earthquake, and 3) the 1999 Chi-Chi earthquake, were conducted to confirm the dynamic performance. All tests were performed with real-scale concrete specimens. Sensors measured the lateral load, acceleration, displacement, crack pattern, and secant system stiffness, and energy dissipation was determined by lateral load-displacement relation. As a result, the precast specimen provided the emulative performance with RC. In the shaking table tests, PC frames' maximum acceleration and displacement response were amplified 1.57 - 2.85 and 2.20 - 2.92 times compared to the ground motions. The precast specimens utilizing clamped mechanical splice showed ductile behavior with energy dissipation capacity against strong motion earthquakes.

Keywords

Acknowledgement

본 연구는 2019년도 한국지진공학회 내진기술 연구개발 지원사업 및 부산대학교 지진방재연구센터, (주)유로엔지니어링, 디엘이앤씨(주), 한국연구재단(NRF-2021R1A5A1032433) 등의 지원으로 수행되었습니다. 지진방재연구센터의 故최형석 박사의 도움에 특히 감사드리며, 지면을 통해 다시금 삼가 고인의 명복을 빕니다.

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