Lattice beam slope drainage system

The invention discloses a lattice beam slope drainage system. The drainage system comprises a vertical groove, a transverse groove, a left inclined groove and a right inclined groove; one side of the transverse groove is near the lower edge of a lattice beam, and extends in the horizontal direction; the transverse groove communicates to an external reservoir; the vertical groove is embedded in a lattice beam slope in the vertical direction of the lattice beam, and penetrates through the lower edge of the lattice beam to communicate with the transverse groove; the left inclined groove and the right inclined groove are respectively positioned on two sides of the vertical groove, and are embedded in the lattice beam slope; the vertical groove respectively communicates with the left inclined groove and the right inclined grooves; and the left inclined groove and the right inclined groove both aslant upwards extend in the upper edge direction of the lattice beam. The drainage system can effectively protect the sta