This study is an experimental study to evaluate the vehicle-protection performance of the reinforced F section of a concrete median barrier. To reinforce the strength performance and durability of the F section, the design strength of concrete was increased and a wire mesh was added. The reinforced F section was tested in an actual collision to verify the protection performance of the SB4 class(Impact Severity: 160kJ) concrete barrier. In the truck-crash test for strengthperformance evaluation, no damage or no sufficient scattering occurred to cause damage to a third party. In addition, the truck smoothly moved through an escape box after the collision. THIV and PHD, which are criteria for evaluating the occupant-protection performance, were measured at 75% and 64% of the limit, respectively, and were confirmed to provide good occupant-protection performance. The vehicle rotations after the collision were 12%–19% of the allowed limits.

Abstract
1. 서 론
2. 연구방법 및 단면보강
    2.1 연구방법
    2.2 기존 단면 검토
    2.3 방호울타리 방호성능 기준
    2.4 F단면 보강
3. 성능검증
    3.1 실물충돌시험 성능평가방법
    3.2 강도성능 시험결과
    3.3 탑승자보호성능 시험결과
4. 결 론
REFERENCES

• 주봉철(한국건설기술연구원 지하공간안전연구센터) | Joo Bongchul (Korea Institute of Civil Engineering & Building Technology) Corresponding author
• 연영모(충북대학교 토목공학과) | Yeon Youngmo (Department of Civil Engineering, Chungbuk National University)
• 김정호(한국건설기술연구원 지하공간안전연구센터) | Kim Jungho (Korea Institute of Civil Engineering & Building Technology)
• 이성진(한국건설기술연구원 지하공간안전연구센터) | Lee Sungjin (Korea Institute of Civil Engineering & Building Technology)
• 지상원(충북대학교 토목공학과) | Jee Sangwon (Department of Civil Engineering, Chungbuk National University)