용접철망으로 보강된 F단면 콘크리트 방호울타리 SB4등급 방호성능 평가 = Evaluation of the Protection Performance of Reinforced F Shape Barrier u sing Wire Mesh

국문 초록 (Abstract)

본 연구는 중앙분리대용 콘크리트 방호울타리 F단면을 보강하고 차량방호성능을 평가하기 위한 실험적 연구이다. 기존 F단면의 성능 및 내구성을 보강하고자 콘크리트 설계강도를 증가시키고 단면중앙에 용접철망을 추가 배치하였다. 이 후 보강된 F단면은 SB4 등급의 방호성능을 확인하기 위해 실물충돌실험을 실시하였다. 실험결과 보강된 F단면에 대형차량이 충돌하여도 제3자에게 피해를 줄 정도의 파손과 비산 없어 강도성능을 만족하는 것으로 나타났다. 또한 대형차량 충돌 후 차량은 탈출박스를 통해 원만히 진행하는 것으로 나타났다. 승용차 충돌실험 결과 탑승자보호 성능평가 기준인 THIV와 PHD가 각각 제한치의 75%와 64% 수준의 우수한 탑승자보호성능을 갖추고 있는 것으로 확인되었으며, 차량회전량은 기준치의 12∼19%수준으로 측정되었다.

다국어 초록 (Multilingual Abstract)

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 strength-performance 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.

참고문헌 (Reference)

1 이상열, "차량 충돌 및 방호울타리 구조의 불확실성을 고려한 탑승자 보호성능 상호영향 해석" 한국복합신소재구조학회 10 (10): 42-49, 2019

2 김동성, "스마트하이웨이 종방향 방호울타리 안전성능 평가를 위한 충돌조건" 한국방재학회 9 (9): 49-57, 2009

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