논문 상세보기
Conditional spectra (CS) are applied to the seismic fragility assessment of a nuclear power plant (NPP) containment building for comparison with a relevant conventional uniform hazard response spectrum (UHRS). Three different control frequencies are considered in developing conditional spectra. The contribution of diverse magnitudes and epicentral distances is identified from deaggregation for the UHRS at a control frequency and incorporated into the conditional spectra. A total of 30 ground motion records are selected and scaled to simulate the probability distribution of each conditional spectra, respectively. A set of lumped mass stick models for the containment building are built considering nonlinear bending and shear deformation and uncertainty in modeling parameters using the Latin hypercube sampling technique. Incremental dynamic analysis is conducted for different seismic input models in order to estimate seismic fragility functions. The seismic fragility functions and high confidence of low probability of failure (HCLPF) are calculated for different seismic input models and analyzed comparatively.
1. 서 론
2. 격납건물의 수치해석모델
2.1 선형탄성 모델
2.2 비선형 모델
2.3 한계상태
3. 지반운동
3.1 등재해도응답스펙트럼
3.2 조건부스펙트럼
3.3 지반가속도 시간이력
4. 지진취약도 평가절차
4.1 무작위성의 모델링
4.2 불확실성의 모델링
4.3 증분동적해석
5. 지진취약도 평가결과
5.1 손상 유형
5.2 지진취약도함수
5.3 중앙값 성능
5.4 대수표준편차
5.5 HCLPF 성능
6. 결 론
REFERENCES
