Trend of the track irregularity with reinforced Railroad Roadbed materials measuring in Service Railroad line

실 열차구간에서 측정된 강화노반재료별 궤도틀림 진행 평가

The railroad roadbed plays an important role in distributing and transferring the train loading to subgrade, preventing subgrade from bearing softened by providing appropriate stiffness for subgrade, and eventually supporting the track structures. Presently, the reinforced roadbed was widely constructed in high speed line and is proceeding a research about economical thickness and methodologies for the design of reinforced roadbed. Field test section is located at Kongbu line which is from Suwon to Pungtack. In this study, field test were measured a track irregularity with several types of reinforced roadbed materials by using Track Master. The field testing were conducted between March, 2006 and March, 2007.