CULVERT Russian patent published in 2022 - IPC E01F5/00 

FIELD: road construction.

SUBSTANCE: invention relates to the field of road construction and can be used in the construction of roads to ensure the passage of water through the body of the subgrade. The culvert consists of half rings, the ends of which are installed on the foundation, which has end protrusions and guides on the sides, and is located in a subgrade with a hard surface. It has an additional hard coating in the form of brickwork, located on both sides on the surface of the half-rings, with the formation of a pocket in the center of their upper part along their entire length, while in the pocket with gaps on both sides there is a support with a divider visor, relative to which from two sides between the outer surface of the half-rings and the brickwork there are two-layer cuts of film material with an anti-friction coating of the inner contacting sides. Each cut of the film material is folded in half, the free ends of which are brought into the gaps between the pocket and the support under the divider visor, and the place of bending of the cuts of the film material is located at the base of the half-rings, above the foundation. The upper layer of the film material cuts has folds formed under every third row of brickwork to enable the film material to move along with the brickwork under soil load along the entire outer surface of the half-rings, and the guides are provided with elastic support elements for placing the base of the brickwork on them.

EFFECT: increasing the reliability of the structure, as well as reducing the material consumption of road pipes due to the reduction of vertical loads acting on the pipes.

1 cl, 4 dwg