철도 자갈도상 궤도틀림의 줄맞춤을 위한 사장식(교차법) 적용사례

Track irregularities of a ballst bed track proceed continuously due to train service and environmental factors. Track irregularities can be categorized into gauge, lining, cross level and twist irregularity and maintained according to these classification. Among these irregularities, the irregularity of lining goes along not locally but widely due to a long-term operation. And the precision adjustment by measurements in construction phase is limited to adjust the irregularity of lining. There is a chord-to-rail methode (Transposition) by a curved-versine to adjust the irregularity of lining under the site condition. This paper introduce the case where the chord-to-rail method is applicated to adjust the irregularity of lining.