Rail foundation construction method and rail foundation block

摘要

To provide a rail foundation block used in construction of rail foundation of a portal crane.SOLUTION: A concrete-made rail foundation block 20 for installing a travel rail of a crane is precast. The rail foundation block has a foundation part, and an U-shaped cross section that is composed of a pair of side walls erected upward so as to form one U-shaped groove to the inside from the foundation part and are wholly inverted U-shaped, U-shaped or U-shaped with the upper die opened in a single piece, and a plurality of pieces of embedded hardware for installing a travel rail on a bottom surface of the groove are embedded. The angle in the inside of the side wall on both sides of the groove may be largely chamfered relative to the angle on the outside thereof.SELECTED DRAWING: Figure 3