실험 및 해석적 연구에 의한 모형 캐비닛의 지진거동특성 분석 = Seismic Behavior Characteristics Analysis of a Cabinet Model via Experimental and Numerical Studies

국문 초록 (Abstract)

원전 내 전기기기의 내진성능 평가는 안전성 확보에 매우 중요하다. 이 연구에서는 원전에 설치되는 전기기기의 동특성 및현장조사 결과를 참고하여 모형 캐비닛과 앵커기초를 설계 및 제작하였다. 제작된 모형 캐비닛을 대상으로 진동대실험을 수행하였다.
실험 결과를 바탕으로 유한요소모델을 작성하고 지진응답해석을 수행하였다. 입력지진동이 커짐에 따른 실험 및 해석 결과를 비교하여모형 캐비닛의 지진거동특성을 분석하였다. 두 결과에 대한 모형 캐비닛의 지진거동은 다르며 내진성능에 큰 차이가 발생할 수 있다.
따라서 캐비닛과 콘크리트 기초 사이의 상호작용을 고려할 수 없는 경우 캐비닛의 지진거동 특성은 실험적으로 평가하는 것이 적절할것으로 판단하였다.

다국어 초록 (Multilingual Abstract)

Evaluating the seismic performance of electrical equipment in nuclear power plants is crucial for ensuring safety. In this study, a cabinet model and its anchor foundation were designed and manufactured based on the dynamic characteristics of electrical equipment used in nuclear power plants and findings of field surveys. A shaking table test was conducted on the fabricated cabinet model. Based on the experimental results, a finite element model was developed for the seismic response analysis. The seismic behavior characteristics of the cabinet model were examined by comparing the experimental and analytical results as the input seismic motion increased. Differences were observed between the seismic behavior of the cabinet model in two results, potentially leading to considerable variations in the seismic performance. Consequently, if the interaction between the cabinet and concrete foundation is not considered, it would be prudent to experimentally evaluate the seismic behavior characteristics of the electrical cabinet.

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