지역별 기후요소를 고려한 설정온도의 타당성 연구

초록

The neutral temperature which is the main factor that affect the changes of axial force of the rail may be fluctuated by maintenance work, track conditions and climatic conditions etc. In order to solve an imbalance of the axial force caused by the change of the neutral temperature and secure safety of the track buckling, resetting work of neutral temperature is carried out. According to the Korea Meteorological Administration data for past 30 years, there is some difference in the regional annual range of air temperature because regional and seasonal climate special condition of north and southern local is different. And recently, yearly minimum air temperature is rising in the most area due to the global warming. Therefore, many changes are expected in the rail temperature variation. In this study, the feasibility of domestic rail installation temperature was investigated considering past regional climatic element from the Korea Meteorological Administration.