논문 상세보기
The Gyeong-Ju earthquake in the magnitude of 5.8 on the Richter scaleoccurred in September 12, 2016. Because there are many nuclear power plants (NPP) near the epicenter of the Gyeong-Ju earthquake, the seismic stability of nuclear power plants is becoming a social problem. In order to evaluate the safety of seismically isolated NPP, the seismic response of a NPP subjected to the Gyeong-Ju earthquake was compared with those of 30 sets of artificial earthquakes corresponding to the nuclear standard design spectrum (NSDS). A 2-node model and a simple beam-stick model were used for the seismic analysis of seismically isolated NPP structures. Using 2-node model, the effect of internal temperature rise, decrease of shear stiffness, increase of lateral displacement and decrease of vertical stiffness according to nonlinear behavior of lead-rubber bearing (LRB) were evaluated. The displacement response, the acceleration response, and the shear force response of the seismically isolated nuclear containment structure were evaluated using the simple beam-stick model. It can be observed that the seismic responses of the isolated nuclear structure subjected to Gyeong-Ju earthquake is significantly less than those to the artificial earthquakes corresponding to NSDS.
2. 경주지진과 원전표준설계스펙트럼의 비교
2.1 원전표준설계스펙트럼 특성
2.2 경주 지진의 특성
3. 면진장치 및 원전구조물의 지진해석 모델
4. 면진된 원전구조물의 지진응답 비교
4.1 면진장치의 비선형 거동에 의한 온도상승효과 분석
4.2 간략 Beam-Stick 모델을 이용한 면진된 원전구조물의 지진응답 비교
5. 결 론
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