To solve the problems of a tie 7; that train load causes repeating vertical and horizontal movements of the tie 7, causing the irregularity of the track and causing ballast below and besides the tie to move away, resulting in an increase in the irregularity of the track and the need to correct the track within a short period; that train vibration causes mud pumping from the ballast, also causing the irregularity of the track; and that the perpendicularity of the tie to the rails is lost by the creeping of the rails, etc.

Box shapes are attached to the tie 7 to prevent the settlement of the tie 7, each of the box shapes comprising a front plate 2a, a side plate 3a and a bottom face plate 5, all of which together surround the lower portion of the tie 7, and another front plate 2b, another side plate 3b, and a back plate 4b, all of which protrude into ballast 8 in the form of trumpets. A flat plate 4c is mounted on the lower surface of the bottom face plate 5 to maintain the straightness and the perpendicularity of the ties. A rubber plate 11 is inserted between the lower surface of the tie 7 and the bottom face plate 5 to reduce train vibration and prevent mud pumping from the ballast.