토목구조물 신축이음에 따른 프리캐스트 콘크리트 슬래브궤도 패널 길이의 조정

According to the original design, it has been arranged with a lot of short length panel in order to match between civil structures expansion joints and the end of panel of the precast concrete slab track. However it was applied to the SongJeong tunnel which is the double-track at DongHae-Nambu to minimize the number of the end of panel point with adjusting panel length in long. With this adjustments that we make the length of panel long, we expect that precast concrete slab track can improve efficiency both constructuring ability and economic feasibility.