In reinforced concrete (RC) structures, steel corrosion can be occurred due to carbonation and chloride penetration, and these phenomenon lead to a degradation of the structural performance. Existing analytical models for corroded RC columns depend on complex empirical formulas based on specific experimental data. This study proposes a macro analytical model to predict the lateral load-resisting behavior of corroded RC columns. The proposed model is composed of a force-based nonlinear beam–column element that simulates the flexural behavior and a zero-length section element that represents the bond–slip deformation at the column base. To validate the proposed model, its results were compared and analyzed with the experimental results from existing literature. The results showed that the proposed model evaluated the maximum strength and the residual strength at a 4% drift ratio similarly to the experimental values. Furthermore, the model effectively predicted the pinching phenomenon and the hysteretic behavior under cyclic loading.

Abstract
1. 서론
2. 경험식 기반의 부식된 철근콘크리트기둥 해석모델
3. 부식된 철근콘크리트 기둥의 매크로해석모델 제안
    3.1 부식된 철근의 재료모델 (기존연구)
    3.2 매크로 해석모델의 구성
4. 제안된 해석모델의 검증
    4.1 해석 대상 실험체
4.2 해석결과 비교
5. 결론
감사의 글
References

• 음영채(부산대학교 일반대학원 건축공학과, 석사과정) | Eum Yeong-Chae (Dept. of Architecture, Pusan National University)
• 강성훈(부산대학교 일반대학원 건축공학과, 박사과정) | Kang Seong-Hun (Dept. of Architecture, Pusan National University)
• 한선진(전주대학교 건축공학과, 조교수, 공학박사) | Han Sun-Jin (Department of Architectural Engineering, Jeonju University)
• 신동현(부산대학교 건축공학과 조교수, 공학박사) | Shin Dong-Hyeon (Department of of Architectural Engineering, Pusan National University) Corresponding author