INTEGRATED CRITERIA AND SYSTEMATIC PROCESS FOR WIND BARRIER INSTALLATION IN STRONG CROSSWIND REGIONS ALONG KOREAN EXPRESSWAYS

摘要

Korea’s expressway network has seen immense expansion in the last decade withconnections being made to all provinces and cities. However, on expressways passingthrough valleys and coastal areas, many stretches are exposed to strong crosswinds. Inthese regions, sideslips between vehicle tires and the road surface can lead to serioustraffic accidents. To reduce accidents, design criteria for the moving speed limit and propercountermeasures such as wind barrier provisions are required.For this reason, there is a need for integrated criteria and a systematic process that can beincorporated into the Korea Expressway Corporation’s policy. In this study, the safetycriteria for vehicles under strong crosswinds were established. The design parameters forwind barriers were obtained. This was followed by wind-speed measurements of stronglocal crosswind fields in all four seasons, which were compared with long-term wind-speeddata from the Korea Meteorological Administration. Finally, a systematic process for windbarrier installation was determined based on a probability analysis.This paper proposes integrated criteria and a systematic process for wind barrierinstallation in Korea.