In this study a hybrid system consisting of steel and carbon fiber reinforced polymer (CFRP) is considered. While CFRP is selected for impact energy reflection due to its high strength, steel is selected for impact energy absorption due to its high ductility. A numerical model considering the elastoplastic behavior of steel is formulated to simulate the dynamic responses of the hybrid system subject to an impact load. A hybrid roadside guard rail system of steel rail and CFRP post is proposed and analyzed with a case study. The numerical model for the hybrid roadside guard rail system is used to find optimized design of the proposed hybrid system for future study.

ABSTRACT
 1. 서 론
 2. 해석모형
 3. 사례연구 및 토의
 4. 결론
 참고 문헌

• 김정중(세종대학교 건설환경공학과) | Kim Jung Joong
• 김승억(세종대학교 건설환경공학과) | Kim Seung-Eock