When the SC structure is partially applied to a nuclear power plant building, an RC-SC connection part is generated between the SC wall and the RC slabs or RC walls. If the difference in flexural stiffness between the RC part and the RC-SC connection part is large, compressive failure of the concrete near the RC-SC connection part may occur. In this study, the flexural stiffness relaxation design such as the approach slab concept was applied and the fracture behavior was analyzed using finite element analysis. As a result, it was confirmed that concrete cracks near RC-SC connection part were reduced when flexural stiffness relaxation design is applied.

Abstract
 1. 서 론
 2. 유한요소해석을 통한 휨강성 완화설계 적용
 3. 결론
 참고문헌

• 남덕우(한국수력원자력 중앙연구원, 신형원전연구소 설계기술그룹) | Nam Deok Woo
• 김갑순(한국수력원자력 중앙연구원, 신형원전연구소 설계기술그룹) | Kim Kap Sun