In order to increase the seismic safety of nuclear power plant (NPP) structures in high seismicity regions, seismic isolation techniques can be adapted to NPP structures. In this paper, the applicability of multi-step analysis of seismically isolated NPP containment structures with lead-rubber bearings (LRB) is evaluated. The floor response spectrum of NPP containment structures with equivalent linear LRB and nonlinear LRB are compared. In addition, the force-displacement relationships for equivalent linear LRB and nonlinear LRB are compared.

 A B S T R A C T  1. 서 론  2. 면진된 원전구조물의 지반-구조물 상호작용해석   2.1 진동수영역해석   2.2 응답이력해석   2.3 다중단계해석  3. 원전 설계스펙트럼에 대응하는 입력지진  4. 지반-면진장치-구조물 상호작용효과를 반영한 진동수영역해석  5. 지반-면진장치-구조물 상호작용효과를 반영한 다중단계해석   5.1 비선형 면진장치를 반영한 해석모델   5.2 다중단계해석의 첫 번째 단계   5.3 다중단계해석의 두 번째 단계   5.4 납-고무받침의 힘-변위관계의 비교  6. 결 론  감사의 글  REFERENCES

• 이진희(강원대학교 토목공학과) | Lee, Jin Hi
• 송종걸( 강원대학교 토목공학과) | 송종걸
• 이은행( 전남대학교 대학원 건설 환경공학과) | 이은행