Introduction to the construction project of culvert splayed wing wall?

Culvert splayed wing wall? The following Zhong Da Consulting brings the definition of the splayed wing wall of culvert, and the relevant contents are for reference.

The splayed wing wall of culvert is a kind of retaining structure to ensure the stability and diversion of subgrade slopes on both sides of culvert or gravity abutment. There are two kinds of splayed wing walls of culverts: straight walls (perpendicular to the end walls) or splayed walls (open and inclined). The latter, also known as the splayed wall, is the most commonly used form, and the oblique angle is generally 30 degrees. The structural form of the splayed wing wall of culvert is closely related to topography, fill height and line.

The plane layout of the splayed wing wall of culvert mainly considers the diversion requirements. For water-crossing buildings with water retaining tasks, the requirements of shore seepage prevention should also be considered in the plane layout of the splayed wing wall of the culvert on the water retaining side. The projection length along the water flow direction is not less than the bedding length. No matter the entrance or exit, the Hebei wall should be smooth on the plane and spread to both sides of the entrance to avoid adverse flow patterns such as backflow and vortex in front of the wall. There are straight lines, broken lines and curves in the plane layout of the splayed wing wall of culvert, which can be selected according to the inlet and outlet velocity and topographic conditions. Generally, straight lines, broken lines or arcs can be used for the splayed wing walls of imported culverts; Ellipse or other curves with gradual curvature should be adopted at the outlet, and the curvature can be gradually increased from the outlet to the downstream. The vertical plane and the twisted plane of the splayed wing wall of culvert are vertical plane, inclined plane and twisted plane respectively. The water-crossing section of the splayed wing wall of culvert suddenly changes at the joint with the water-crossing orifice, which often causes vortex or even backflow. The splayed wing walls of large culverts are mostly vertical, and the splayed wing walls of medium and small culverts can be twisted. The top elevation of the splayed wing wall of the culvert is determined according to the operation requirements of the water-passing building. In principle, it should be higher than the water level when flowing. When the flow rate is low, it can also be lower than the water level. When there is a water retaining task, the top of the splayed wing wall of the culvert on the water retaining side should be higher than the highest water retaining level.

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