| 摘要 |
PURPOSE: An integrated culvert box with a water-tight material is provided to enhance water tightness, flexibility and vibration-resistance since even if tension is applied by ground change and vibration in an axial direction, a water-tight member flexibly processes and thus an air-tight state is maintained. CONSTITUTION: An integrated culvert box with a water-tight material comprises a sliding-type coupling unit(208) and an elastically movable unit(202). The sliding-type coupling unit comprises a plurality of protrusions(210), which are coupled to a coupling groove(106) so that a water-tight member(200) is fixed between culvert boxes. The movable unit elastically moves and maintains the space between culvert boxes in an air-tight state if there is a slipping behavior. |
