KOREASCHOLAR

The rapid expansion of bridge and tunnel infrastructure has resulted in a growing incidence of wind-induced traffic accidents occurring at bridge approaches and tunnel portals. These accidents not only inflict direct damage on vehicles but also lead to substantial social and economic losses, stemming from roadway infrastructure repair and maintenance costs, as well as elevated logistics expenses due to traffic delays and congestion. In this study, a theoretical expression for the lateral displacement of vehicles as a function of wind speed was derived. Subsequently, lateral displacement and lateral wind force were analyzed and compared across vehicle types, considering both straight and curved roadway sections. An analysis of prevailing wind directions at each site revealed that, for passenger cars, the maximum lateral force and displacement on straight sections occurred at a wind incidence angle of 45°, whereas on curved sections with a pier curvature of 90°, the critical wind direction ranged from 0° to 120°. These results demonstrate that vehicle stability can be significantly compromised during high-speed travel under crosswind conditions. Based on departure trajectories of vehicles under varying wind speeds, a risk-assessment scale for wind-induced accidents was developed. In addition, design guidelines were proposed for the strategic placement of windbreak barriers to enhance driving safety under strong wind conditions.

ABSTRACT
1. 서론
    1.1. 개요
2. 기존 연구문헌 고찰
    2.1. 강풍에 의한 차량 변위 및 안정성에 관한 연구
    2.2. 방풍벽 설치기준에 관한 연구
    2.3. 연구의 차별성
3. 강풍에 의한 차량의 횡방향변위 산정
    3.1. 직선부 횡방향변위 산정
    3.2. 곡선부 횡방향변위 선정
    3.3. 차량의 횡방향변위 비교·분석
4. 주행안정성 향상을 위한 방풍벽 설치 유/무판단기준 제시
    4.1. 주행안정성 분석에 따른 사고위험도 판정척도 제시
    4.2. 방풍벽 설치 유/무 판단기준 제시
5. 결론 및 향후 연구과제
감사의 글
REFERENCES

• 권성대(전남대학교 공업기술연구소 선임연구원) | Kwon Sungdae
• 하태준(전남대학교 토목공학과 교수) | Ha Taejun Corresponding author
• 김현수(전북도청 전문위원) | Kim Hyunsoo
• 박제진(전남대학교 토목공학과 부교수) | Park Jejin