논문 상세보기
For the OPR1000, a standard power plant in Korea, an analytical model of the containment building considering voids and deterioration was built with multilayer shell elements. Voids were placed in the vulnerable parts of the analysis model, and the deterioration effects of concrete and rebar were reflected in the material model. To check the impact of voids and deterioration on the seismic performance of the containment building, iterative push-over analysis was performed on four cases of the analytical model with and without voids and deterioration. It was found that the effect of voids with a volume ratio of 0.6% on the seismic performance of the containment building was insignificant. The effect of strength reduction and cross-sectional area loss of reinforcement due to deterioration and the impact of strength increase of concrete due to long-term hardening offset each other, resulting in a slight increase in the lateral resistance of the containment building. To determine the limit state that adequately represents the seismic performance of the containment building considering voids and deterioration, the Ogaki shear strength equation, ASCE 43-05 low shear wall allowable lateral displacement ratio, and JEAC 4601 shear strain limit were compared and examined with the analytically derived failure point (ultimate point) in this study.
2. 공극 및 열화의 반영
2.1 공극 반영
2.2 열화 반영
3. 격납건물 한계상태
3.1 전단강도 한계상태(Ogaki et al., 1981)
3.2 횡변위비 한계상태(ASCE 43-05)
3.3 전단변형률 한계상태(JEAC 4601)
4. 해석모델 구축
5. 해석모델 검증
6. 반복횡가력 해석
6.1 공극의 영향
6.2 열화의 영향
6.3 한계상태 비교
7. 결 론
감사의 글
REFERENCES
