Steel and Composite Structures

  • 제46권2호
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  • Pages.221-236
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  • 2023
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Seismic response of steel reinforced concrete frame-bent plant of CAP1400 nuclear power plant considering the high-mode vibration

  • Biao Liu (College of Water Resources and Architectural Engineering, Northwest A&F University) ;
  • Zhengzhong Wang (College of Water Resources and Architectural Engineering, Northwest A&F University) ;
  • Bo Zhang (College of Water Resources and Architectural Engineering, Northwest A&F University) ;
  • Ningjun Du (School of Civil Engineering and Architecture, Xi'an University of Technology) ;
  • Mingxia Gao (College of Water Resources and Architectural Engineering, Northwest A&F University) ;
  • Guoliang Bai (School of Civil Engineering, Xi'an University of Architecture & Technology)
  • 투고 : 2022.05.17
  • 심사 : 2022.12.21
  • 발행 : 2023.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to study the seismic response of the main plant of steel reinforced concrete (SRC) structure of the CAP1400 nuclear power plant under the influence of different high-mode vibration, the 1/7 model structure was manufactured and its dynamic characteristics was tested. Secondly, the finite element model of SRC frame-bent structure was established, the seismic response was analyzed by mode-superposition response spectrum method. Taking the combination result of the 500 vibration modes as the standard, the error of the base reactions, inter-story drift, bending moment and shear of different modes were calculated. Then, based on the results, the influence of high-mode vibration on the seismic response of the SRC frame-bent structure of the main plant was analyzed. The results show that when the 34 vibration modes were intercepted, the mass participation coefficient of the vertical and horizontal vibration mode was above 90%, which can meet the requirements of design code. There is a large error between the seismic response calculated by the 34 and 500 vibration modes, and the error decreases as the number of modes increases. When 60 modes were selected, the error can be reduced to about 1%. The error of the maximum bottom moment of the bottom column appeared in the position of the bent column. Finally, according to the characteristics of the seismic influence coefficient αj of each mode, the mode contribution coefficient γj•Xji was defined to reflect the contribution of each mode to the seismic action.

키워드

과제정보

The work in this paper was supported by Natural Science Basic Research Plan in Shaanxi Province of China (2023-JC-QN-0519), Chinese Universities Scientific Fund (2452021082) and National Natural Science Foundation of China (52108175).

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