Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Evaluation of Emulative Level for Precast Moment Frame Systems with Dry Mechanical Splices by Using Nonlinear Dynamic Analysis

비선형동적해석을 통한 건식 기계적이음을 갖는 프리캐스트 모멘트 골조의 동등성 평가

  • Kim, Seon-Hoon (Dept. of Architectural Engineering, Chungbuk National University) ;
  • Lee, Won Jun (Dept. of Architectural Engineering, Chungbuk National University) ;
  • Lee, Deuckhang (Dept. of Architectural Engineering, Chungbuk National University)
  • 김선훈 (충북대학교 건축공학과) ;
  • 이원준 (충북대학교 건축공학과) ;
  • 이득행 (충북대학교 건축공학과)
  • Received : 2023.11.06
  • Accepted : 2023.11.28
  • Published : 2024.03.01
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Abstract

This study presents code-compliant seismic details by addressing dry mechanical splices for precast concrete (PC) beam-column connections in the ACI 318-19 code. To this end, critical observations of previous test results on precast beam-column connection specimens with the proposed seismic detail are briefly reported in this study, along with a typical reinforced concrete (RC) monolithic connection. On this basis, nonlinear dynamic models were developed to verify seismic responses of the PC emulative moment-resisting frame systems. As the current design code allows only the emulative design approach, this study aims at identifying the seismic performances of PC moment frame systems depending on their emulative levels, for which two extreme cases were intentionally chosen as the non-emulative (unbonded self-centering with marginal energy dissipation) and fully-emulative connection details. Their corresponding hysteresis models were set by using commercial finite element analysis software. According to the current seismic design provisions, a typical five-story building was designed as a target PC building. Subsequently, nonlinear dynamic time history analyses were performed with seven ground motions to investigate the impact of emulation level or hysteresis models (i.e., energy dissipation performance) on system responses between the emulative and non-emulative PC moment frames. The analytical results showed that both the base shear and story drift ratio were substantially reduced in the emulative system compared to that of the non-emulative one, and it indicates the importance of the code-compliant (i.e., emulative) connection details on the seismic performance of the precast building.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. RS-2023-00209647).

References

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