Herein, the existing structural design criteria for highway bridge columns with hollow bars were analyzed. Expanding upon previous research focused on the performance analysis of the columns under compressive loads, load– displacement curves were evaluated and crack analysis was performed under cyclic transverse loads. A three-dimensional nonlinear finite-element structural analysis compared the structural performance of existing steel bars, same-reinforced hollow bars, and reduced hollow bars in detail. Results indicated that with regard to elastic or initial crack behavior, the existing steel bars can be replaced by the other bars. Future research should delve into inelastic behavior and strategies to ensure seismic performance.

1. 서 론
2. 중공철근 적용 기둥부 설계 분석
3. 비선형 유한요소 구조해석
    3.1 비선형 구조해석 모델링
    3.2 하중-변위 곡선 비교분석
    3.3 반복 횡하중에 대한 균열성능 분석
4. 요약 및 결론
후 기
REFERENCES

• 손병직(건양대학교 재난안전소방학과 교수) | Son, Byung-Jik (Professor, Department of Disaster Safety and Fire, Konyang University, Nonsan, Korea)
• 노명현(포스코 철강솔루션연구소 수석연구원) | Noh, Myung-Hyun (Senior Researcher, Steel Structure Research Group, Steel Solution Research Lab., POSCO, Incheon, Korea)
• 이상열(국립안동대학교 건설시스템공학과 교수) | Lee, Sang-Youl (Professor, Department of Civil Systems Engineering, Andong National University, Andong, Korea)