CULVERT Russian patent published in 2017 - IPC E01F5/00 

FIELD: roads.

SUBSTANCE: invention relates to outfitting of roads, namely to water drainage from highways base or from railway ballast layer with the help of culverts. Culvert pipe is made of fiber-concrete fragments of two types, provided with embedded elements. Pipe center fragments have shape of isosceles trapezium with small and large bases and sides inclination angle of 30–45 degrees. Pipe outermost areas fragments have shape of rectangular trapezoid with side inclination angle, opposite to straight angle, also of 30–45 degrees. Each fragment is made concave with radius, equal to assembled pipe radius, fragment thickness is 50–300 mm, and each fragment all sides are equipped with embedded devices in form of metal plates with bolt holes. During culvert assembly fragments are arranged along pipe circumference so, that large base is docked with trapezoid larger base, and smaller is with trapezoid smaller base. Along length pipe fragments are connected to lateral sides and all fragments are fixed to each other by means of embedded devices with bolts.

EFFECT: technical result is simplification of culvert assembly.

1 cl, 6 dwg