A Study on the Development of GFRP-Applied Rigid Safety Barriers for Bridges(SB5-B)

doi:10.15683/kosdi.2026.9.30.999

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2026 Vol.22, Issue 3 Preview Page Next Page

Original Article

A Study on the Development of GFRP-Applied Rigid Safety Barriers for Bridges(SB5-B) GFRP 적용 교량용 SB5-B등급 강성 방호울타리 개발에 관한 연구: 이승원¹ㆍ송동민²ㆍ김성겸³*
Seung-Won Lee¹, Dong-Min Song², Seong-Kyum Kim³*; ¹Ph. D. Candidate, Department of Civil Engineering, Kumoh National Institute of Technology, Gumi, Republic of Korea
²Ph. D. Candidate, Department of Civil Engineering, Kumoh National Institute of Technology, Gumi, Republic of Korea
³Professor, Department of Civil Engineering, Kumoh National Institute of Technology, Gumi, Republic of Korea

30 September 2026. pp. 999-1007

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Abstract

This study aims to evaluate the structural and performance feasibility of replacing conventional steel reinforcement with glass fiber-reinforced polymer(GFRP) bars in highway bridge rigid safety barriers(SB5-B grade) to address continuous durability degradation caused by chloride- induced corrosion. Method: The research reviewed domestic and international design standards, developed a cross-sectional design by evaluating bending performance and shear capacity, and conducted vehicle collision simulations with five representative cross-sections alongside full-scale crash tests. Result: While the proposed GFRP-reinforced section demonstrated sufficient resistance capacity against design collision loads, the full-scale crash tests revealed that the occupant protection performance requirement was not satisfied because the THIV value exceeded the acceptance limit. Conclusion: This study verified the technical feasibility of GFRP application as a practical alternative for improving the durability of facilities vulnerable to chloride deterioration, and more refined evaluations and crash tests for separated median barriers will be conducted in the follow-up study.

Keywords

GFRP Reinforcing Bar

Rigid Safety Barrier

Vehicle Collision Simulation

Full-scale Crash Test

Occupant Protection Performance

연구목적: 본 연구는 염해로 인한 지속적인 내구성 저하 문제를 해결하기 위해 고속도로 교량 구조물(콘크리트 강성 방호울타리 및 중앙분리대, SB5-B 등급)에 기존 철근을 대체하여 유리섬유 보강 폴리머(GFRP) 보강근을 적용하는 것의 구조적 및 성능적 타당성을 평가하는 것을 목적으로 한다. 연구방법: 국내외 설계 기준을 검토하여 휨 성능과 전단 내력 등을 고려한 단면 설계를 개발하였으며, 5가지 대표단면에 대한 차량 충돌 시뮬레이션 및 실물 차량 충돌시험을 수행하여 성능을 검증하였다. 연구결과: 제안된 GFRP 보강 단면은 설계 충돌 하중에 대해 충분한 저항 성능을 확보하였으나, 실물 충돌시험 결과 THIV 값이 허용 한계를 초과하여 탑승자 보호성능 기준을 완벽하게 만족하지는 못하는 것으로 나타났다. 결론: 염해에 취약한 교량 안전시설의 내구성 향상 및 유지관리 비용 절감을 위한 GFRP 적용의 기술적 타당성을 확인하였으며, 기준 충족을 위해 후속 연구에서는 분리형 중앙분리대에 대한 실물 충돌시험 및 보다 정밀한 평가를 수행할 예정이다.

키워드

GFRP 보강근

강성 방호울타리

차량 충돌 시뮬레이션

실물 차량 충돌시험

탑승자 보호성능

References

ACI Committee 440 (2022). Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars. American Concrete Institute, ACI CODE-440.11-22. Farmington Hills, MI, USA.
American Association of State Highway and Transportation Officials (AASHTO) (2020). AASHTO LRFD Bridge Design Specifications. AASHTO, 9th Edition, Washington, D.C., USA.
El-Salakawy, E., Benmokrane, B., Desgagné, G. (2004). “Design, construction, and dynamic testing of GFRP-reinforced concrete bridge barriers.” Journal of Bridge Engineering, Vol. 9, No. 6, pp. 579-585.
Jeong, Y.-S., Kim, J.-H., Park, C.-W. (2023). “Numerical simulation and full-scale test procedure for SB6/H3 grade median barriers using GFRP bars.” Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 27, No. 4, pp. 88-97.
Ji, D.-H., Lee, S.-Y. (2022). “Nonlinear dynamic analysis of SB6 grade GFRP reinforced concrete barrier.” Journal of the Korea Society of Disaster Information, Vol. 18, No. 2, pp. 245-254.
Khederzadeh, H., Sennah, K. (2014). “Static and dynamic response of PL-2 concrete bridge barrier reinforced with GFRP bars.” Proceedings of the 4th International Conference on Application of FRP Composites in Civil Infrastructure, Calgary, Canada, pp. 112-120.
Ministry of Land, Infrastructure and Transport (MOLIT) (2021). Design Code for Concrete Structures Reinforced with FRP. KDS 24 50 05, Korean Design Standard, Sejong, Korea.
Ministry of Land, Infrastructure and Transport (MOLIT) (2021). Guidelines for Installation and Management of Road Safety Facilities - Safety Barriers. Ministry of Land, Infrastructure and Transport, Sejong, Korea.
Rostami, M., Sennah, K., Shahawy, M. (2018). “Development and crash testing of GFRP-reinforced concrete bridge barrier connected to deck slab.” Journal of Composites for Construction, Vol. 22, No. 3, 04018008.
Sennah, K., Hedjazi, S. (2019). “Full-scale crash test evaluation of GFRP-reinforced bridge safety barriers.” Journal of Performance of Constructed Facilities, Vol. 33, No. 5, 04019054.
Sennah, K., Khederzadeh, H. (2014). “Development of GFRP-reinforced concrete bridge barrier for crash-worthiness under MASH TL-4 conditions.” Transportation Research Record, Vol. 2433, No. 1, pp. 45-56.
Transportation Research Board (TRB) (2009). Manual for Assessing Safety Hardware (MASH). American Association of State Highway and Transportation Officials (AASHTO), 1st Edition, Washington, D.C., USA.

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 22
No :3
Pages :999-1007
DOI :https://doi.org/10.15683/kosdi.2026.9.30.999

[1] ACI Committee 440 (2022). Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars. American Concrete Institute, ACI CODE-440.11-22. Farmington Hills, MI, USA.

[2] American Association of State Highway and Transportation Officials (AASHTO) (2020). AASHTO LRFD Bridge Design Specifications. AASHTO, 9th Edition, Washington, D.C., USA.

[3] El-Salakawy, E., Benmokrane, B., Desgagné, G. (2004). “Design, construction, and dynamic testing of GFRP-reinforced concrete bridge barriers.” Journal of Bridge Engineering, Vol. 9, No. 6, pp. 579-585.

[4] Jeong, Y.-S., Kim, J.-H., Park, C.-W. (2023). “Numerical simulation and full-scale test procedure for SB6/H3 grade median barriers using GFRP bars.” Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 27, No. 4, pp. 88-97.

[5] Ji, D.-H., Lee, S.-Y. (2022). “Nonlinear dynamic analysis of SB6 grade GFRP reinforced concrete barrier.” Journal of the Korea Society of Disaster Information, Vol. 18, No. 2, pp. 245-254.

[6] Khederzadeh, H., Sennah, K. (2014). “Static and dynamic response of PL-2 concrete bridge barrier reinforced with GFRP bars.” Proceedings of the 4th International Conference on Application of FRP Composites in Civil Infrastructure, Calgary, Canada, pp. 112-120.

[7] Ministry of Land, Infrastructure and Transport (MOLIT) (2021). Design Code for Concrete Structures Reinforced with FRP. KDS 24 50 05, Korean Design Standard, Sejong, Korea.

[8] Ministry of Land, Infrastructure and Transport (MOLIT) (2021). Guidelines for Installation and Management of Road Safety Facilities - Safety Barriers. Ministry of Land, Infrastructure and Transport, Sejong, Korea.

[9] Rostami, M., Sennah, K., Shahawy, M. (2018). “Development and crash testing of GFRP-reinforced concrete bridge barrier connected to deck slab.” Journal of Composites for Construction, Vol. 22, No. 3, 04018008.

[10] Sennah, K., Hedjazi, S. (2019). “Full-scale crash test evaluation of GFRP-reinforced bridge safety barriers.” Journal of Performance of Constructed Facilities, Vol. 33, No. 5, 04019054.

[11] Sennah, K., Khederzadeh, H. (2014). “Development of GFRP-reinforced concrete bridge barrier for crash-worthiness under MASH TL-4 conditions.” Transportation Research Record, Vol. 2433, No. 1, pp. 45-56.

[12] Transportation Research Board (TRB) (2009). Manual for Assessing Safety Hardware (MASH). American Association of State Highway and Transportation Officials (AASHTO), 1st Edition, Washington, D.C., USA.

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

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