Self -align precast concrete box culvert

The utility model discloses a self -align precast concrete box culvert, box culvert are that the cross -section is tetragonal hollow tube column structure, two sides that the box culvert is relative are A face and B face respectively be provided with a plurality of recesses on the side of A face, be provided with a plurality of archs on the side of B face, the position of recess is corresponding with projecting position. According to the length of laying, the box culvert A face and the B face of adjacent setting interconnect, protruding card with advance the recess in, better connection effect has. Side through the box culvert being connected sets up a plurality of recesses and arch respectively, acts on bellied block through the recess, has strengthened the connection power between the box culvert, makes piecing together that two box culverts of fore -and -after can be firm gather together, has effectually solved the circumstances that present box culvert is impervious, the bearing capacity is not enough. 本实