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Generation of Design Time History Complying With Japanese Seismic Design Standards for Nuclear Power Plants

일본 원전 내진설계 기술기준을 적용한 모의지진파(가속 도시간이력) 작성

  • Gin, Seungmin (Architectural & Environmental Engineering Department, KEPCO E&C) ;
  • Kim, Yongbog (Architectural & Environmental Engineering Department, KEPCO E&C) ;
  • Lee, Yongsun (Architectural & Environmental Engineering Department, KEPCO E&C) ;
  • Moon, Il Hwan (Nuclear Technology Research Department, KEPCO E&C)
  • 진승민 (한국전력기술(주) 토건환경기술실) ;
  • 김용복 (한국전력기술(주) 토건환경기술실) ;
  • 이용선 (한국전력기술(주) 토건환경기술실) ;
  • 문일환 (한국전력기술(주) 원자력연구실)
  • Received : 2020.12.31
  • Accepted : 2021.02.17
  • Published : 2021.03.01

Abstract

Seismic designs for Korean nuclear power plants (NPPs) under earthquakes' design basis are noticed due to the recent earthquake events in Korea and Japan. Japan has developed the technologies and experiences of the NPPs through theoretical research and experimental verification with extensively accumulated measurement data. This paper describes the main features of the design-time history complying with the Japanese seismic design standard. Proper seed motions in the earthquake catalog are used to generate one set of design time histories. A magnitude and epicentral distance specify the amplitude envelope function configuring the shape of the earthquake. Cumulative velocity response spectral values of the design time histories are compared and checked to the target response spectra. Spectral accelerations of the time histories and the multiple-damping target response spectra are also checked to exceed. The generated design time histories are input to the reactor building seismic analyses with fixed-base boundary conditions to calculate the seismic responses. Another set of design time histories is generated to comply with Korean seismic design procedures for NPPs and used for seismic input motions to the same reactor containment building seismic analyses. The responses at the dome apex of the building are compared and analyzed. The generated design time histories will be also applied to subsequent seismic analyses of other Korean standard NPP structures.

Keywords

References

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