본 연구에서는 섬유보강콘크리트(SFRC) 구조물의 수치해석을 위한 K&C모델의 보정기법을 소개하였다. SFRC 1축 및 3축 압축강도 실험결과를 기반으로 보정을 수행하였으며, 단일요소 해석결과를 실험결과와 비교함으로써 보정 기법의 검증을 수행하였다. 또 한, 변형률 속도의 영향을 반형하기 위해 동적증가계수(DIF)를 고려하여 SFRC 구조물의 발사체 관통해석을 수행함으로써 보정기법의 적용 가능성을 확인하였다.

This paper introduces a modified Karagozian & Case concrete model (K&C model) for the numerical analysis of a steel-fiber-reinforced concrete (SFRC) structure subjected to projectile impact. The original K&C model was calibrated to consider the effects of steel fibers accurately by modifying the strength surfaces and input parameters. Single element tests were then conducted and compared with uniaxial and triaxial compressive data to verify the modified model. With the application of a dynamic increase factor, the finite element model of the SFRC structure subjected to projectile impact was constructed. Thereafter, the applicability of the modified material model was examined by comparisons with the experimental results.

Abstract
1. 서 론
2. 본 론
    2.1 기존 K&C모델
    2.2 K&C 모델의 보정
    2.3 수치해석
3. 결 론
References
요 지

• 박강규(한국건설기술연구원 인프라안전연구본부) | Gang-Kyu Park (Structural Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) Corresponding author
• 이민주(한국과학기술원 건설 및 환경공학과) | Minjoo Lee (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)