한국재난정보학회 논문집 (Journal of the Society of Disaster Information)

  • 제8권2호
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  • Pages.188-196
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  • 2012
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  • 1976-2208(pISSN)
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  • 2671-5287(eISSN)
한국재난정보학회 (The Korean Society of Disaster Information)
권호 표지

상시진동을 이용한 CANDU형 격납건물의 동적파라미터 산정

Dynamic Parameter Estimation of a CANDU Type Containment Using Ambient Vibration Measurements

  • Choi, Sanghyun (Department of Railroad Facility Engineering, Korea National University of Transportation) ;
  • Park, Sooyong (Department of Architecture and Ocean Space, Korea Maritime University) ;
  • Hyun, Chang-Hun (Structural Systems and Site Evaluation Department, Korea Institute of Nuclear Safety) ;
  • Kim, Moon-Soo (Structural Systems and Site Evaluation Department, Korea Institute of Nuclear Safety)
  • 발행 : 2012.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

고유진동수와 같은 동적파라미터는 구조물 전체의 강성에 대한 정보를 제공할 수 있어 격납건물과 같은 대형구조물의 건전성 모니터링에 유용하게 사용될 수 있다. 이러한 동적특성을 구조물의 사용성에 지장을 주지 않고 추출하기 위해서는 상시진동을 이용한 모달해석 기법의 적용이 필수적이다. 이 연구에서는 상시진동 측정자료를 이용하여 월성 2호기 격납건물의 동적파라미터를 산정하였다. 연구의 가능성은 격납건물의 수치해석모델을 이용하여 검증하였다. 월성 2호기 격납건물에서 측정된 상시진동에 대한 모달해석 결과 해석모드와 충분한 상관성을 갖는 동적파라미터를 산정할 수 있었다.

Dynamic parameters such as natural frequencies can provide global stiffness information of a structure, and thus be utilized in monitoring structural integrity of large structures such as a containment. To identify the dynamic parameters without interrupting normal operation, a modal analysis method based on ambient vibration measurements should be applied. In this study, dynamic parameters of the containment of Wolsong Unit 2 are identified using ambient vibration measurement data. The feasibility of the study is verified using a numerical model for the containment. From the modal analysis, dynamic parameters of the containment with acceptable correlation to analytical modes can be estimated.

키워드

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