The concrete meaning and position of the end wall, retaining wall and wing wall of tunnel entrance. Please give an example. thank you

The end wall is located on both sides of the entrance and exit, which plays the role of retaining soil and guiding water, and is the structure to ensure the stability of subgrade or embankment at culvert. The commonly used end wall forms are splayed wing wall and straight wall. End walls are also arranged at the inlet and outlet of the channel.

Retaining wall is also commonly known as slope protection. Refers to all kinds of bedding and planting on the slope to prevent the slope from being washed away.

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.

Extended data

roadblock

Traditional slope protection mainly includes mortar or dry block stone slope protection, cast-in-place concrete slope protection, precast concrete block slope protection and so on. It plays the role of fixing and blocking in the manufacture of mold (mu).

These traditional slope projects mainly emphasize its strength and efficiency, but often ignore its damage to the environment; Ecological slope protection, as a combination of geotechnical engineering and environmental engineering, has both protection and environmental effects, and is an effective means of slope protection and slope stabilization.

wing wall

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.

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