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프리스트레스 손실에 따른 원자로격납건물 극한내압성능 평가

Evaluation of Ultimate Pressure Capacity (UPC) of Containment Building Considering the Loss of Prestress

  • 안경희 (한국원자력연구원 구조지진안전연구부) ;
  • 권태현 (한국원자력연구원 구조지진안전연구부) ;
  • 김민규 (한국원자력연구원 구조지진안전연구부)
  • 투고 : 2024.08.07
  • 심사 : 2024.10.19
  • 발행 : 2024.12.20

초록

This paper evaluates the ultimate pressure capacity (UPC) of a prestressed concrete containment building, considering the loss of prestress. A three-dimensional finite element model with openings was utilized for the UPC evaluation, and material properties reflecting severe accident temperatures were applied. The failure criteria were established based on the strain of the liner plate in accordance with the regulatory guidelines. When the prestress was reduced by approximately 14% from its initial value, the UPC decreased by about 4%. This study acknowledges limitations in the determination of nonlinear material properties, realistic prestress losses, and failure criteria. Further research to address these limitations could enhance the accuracy of UPC evaluation.

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과제정보

이 논문은 2024년도 정부(과학기술정보통신부, 산업통상자원부)의 재원으로 한국연구재단(NRF)과 한국에너지기술평가원(KETEP)의 지원을 받아 수행된 연구임(No. RS-2022-00144409, No.20224B10300010).