What is the definition and function of subgrade?

Simply put, it is called embankment, which can be used by drivers and pedestrians when crossing the ground; Below the ground, there is generally a certain width, and pedestrians can also call it cutting. What supports the pavement layer on the pavement is called subgrade.

Cutting, when the subgrade surface of laying track or pavement is lower than natural ground, excavation forms subgrade, which is cutting. Function: ease the longitudinal slope of the road or control the elevation of the intersection line of the ridge.

Subgrade made by digging natural ground. In the process of long-term generation and evolution, the strata that cuttings pass through generally have complex geological structure. The cutting slope is located in the surface layer of crustal cutting. After excavation, it is easy to be deformed and destroyed by various conditions and natural factors, so it should be treated with caution. The design of deep cutting needs special attention, which is a complex technical problem. The design of cutting slope is mainly to determine the cross-sectional form and slope gradient. Cutting is generally divided into soil cutting and stone cutting according to the stratum it passes through.

Embankment refers to the embankment pavement much higher than the original ground, that is, the filled subgrade higher than the original ground.

Embankment can also be said to be a linear building with a certain density filled with soil or stone on the natural ground.

The explanation of subgrade is relatively simple, that is, the level of auxiliary support of the whole pavement.