Geocell slope protection scheme
Geocell is a mesh cell structure formed by high strength HDPE or PP copolymer broadband, through strong welding or riveting. It is flexible, can be folded up when transported, opened and filled with earth or concrete materials when used, forming a structure with strong lateral limits and large stiffness.
Product features:
1, With flexible, transport can be folded, the construction can be stretched into a network, filled with soil, gravel,
concrete and other loose materials, to form a strong lateral limit and large stiffness of the structure.
2, Light material, wear resistance, chemical stability, light oxygen aging resistance, acid and alkali resistance,
suitable for different soil and desert soil conditions.
3, High side limit and anti-slip, anti-deformation, effectively enhance the bearing capacity of the roadbed and
disperse the load.
4, Change the geocell height, welding distance and other geometric dimensions to meet different engineering
needs.
5, Flexible, small transport volume， Convenient connection and fast construction speed.
Engineering application：
1.Deal with half-filled and half-dug roadbed
When constructing an embankment on a slope with a natural gradient steeper than 1:5, steps should be excavated at the base of the embankment, with each step having a width of no less than 1 meter. When widening existing roads or building new ones in phases, steps should also be excavated where the fill slopes of the new and old road bases meet. For high-grade highways, the typical width of these steps is 2 meters. On each horizontal level of the steps, geogrids should be laid to utilize their vertical lateral reinforcement effect, effectively addressing issues of uneven settlement.
2. Roadbed in wind-blown sand area
The subgrade in the wind-blown sand area should be mainly low embankment, and the filling height is generally not less than 0.3M. Due to the professional requirements of the low subgrade constructed in the wind-blown sand area and the heavy load, the use of geobased cell can play a side role in the loose fill, and ensure the subgrade has high stiffness and strength within a limited height to withstand the load stress of large vehicles.
3. The backside subgrade is reinforced with soil filling
The use of geobank can better achieve the purpose of stiffening the platform back, and enough friction can be generated between the geobank and the filler to effectively reduce the uneven settlement between the roadbed and the structure, and finally effectively alleviate the early impact damage of the "abutment jump" disease on the bridge floor.
4. Subgrade in permafrost area
In the permafrost area, the filling embankment should be built to the minimum filling height to prevent the oversettlement of the embankment by turning or causing the upper limit of the frozen layer to fall. The unique facade reinforcement effect of the geocell and the effective implementation of the overall lateral limiting property can ensure the minimum filling height in some special areas to the maximum extent, and make the filling have high quality strength and stiffness.
5. Treatment of loess collapsible roadbed
When highways and first-class highways pass through collapsible loess and loess areas with good compressibility, or when the allowable bearing capacity of the foundation of the high embankment is lower than the pressure of the vehicle joint load and the embankment's own weight, the subgrade should also be treated according to the bearing capacity requirements, then the superiority of the geocell will be evident.
6, saline soil, expansive soil
The highway, grade I road, shoulder and slope constructed with saline soil and expansive soil are all reinforced. The facade reinforcement effect of the lattice chamber is the best one among all reinforcement materials, and it has excellent corrosion resistance, which can fully meet the requirements of constructing high highways in saline soil and expansive soil.
