Wing wall is a kind of retaining structure to ensure the stability and diversion of subgrade slope on both sides of culvert or gravity abutment. Wing walls can be straight (perpendicular to the end wall) or open (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 wing wall is closely related to topography, fill height and wiring.
Extended data
Precautionary measures of wing wall
1. In the design process of hydraulic structures, designers often tend to ignore the reasonable layout of the upstream and downstream wing walls, make arbitrary connections according to the width of the upstream and downstream river beds of the building, lack detailed theoretical calculation, and focus on the safety calculation of the lock chamber structure, resulting in the phenomenon of paying attention to one thing and losing the other, which brings undue losses to the engineering safety.
2. Not preparing enough funds, blindly accommodating the poor, or changing the original reasonable design size in order to save the project cost, but it often backfires.
3. Lack of understanding of the characteristics of water flow, especially how to prevent the formation of water flow harmful to buildings, and less consideration of engineering layout.
4. Due to poor management, there is no clear regulation on the opening and closing operation procedures of the porous gate, or the operation management personnel have not mastered it at all, resulting in the opposition between design and operation.
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