Construction of Geocell

Introduction to Geocell

Geocell is a three-dimensional mesh structure formed by high-strength welding of reinforced HDPE sheet material. It has the characteristics of flexible expansion and contraction, transportation and stacking, and can be stretched into a mesh during construction. It can be filled with loose materials such as soil, gravel, and concrete to form a structure with strong lateral constraints and high stiffness. At the same time, the geocell also has the advantages of light material, wear resistance, stable chemical properties, resistance to light and oxygen aging, acid and alkali resistance, etc., and is suitable for different soil conditions such as soils and deserts.

Construction method

1. Construction preparation:

· After the acceptance of the excavation slope and filling slope, the access road shall be trimmed with machinery such as soil stackers to connect the step platform with the existing access road, facilitating the transportation of machinery and materials.

· Manually use shovels and picks to trim the slope surface and groove, making it smooth and even from top to bottom, ensuring that the geogrid can be tightly integrated with the slope surface.

2. U-shaped trench excavation:

· At the top of each slope, a U-shaped ditch with a depth of 30-50cm and a width of 50cm is excavated longitudinally along the foundation slope using machinery and manual labor.

3. Laying and fixing of geogrid:

· Open the geogrid and lay it flat on the slope, bury the upper opening of the grid in a U-shaped ditch, and fix it with U-shaped steel bars to prevent the geogrid from sliding down after filling with humus soil.

· After the top is fixed, manually tension the lower part and the other side simultaneously, and fix the edge of the first geogrid with L-shaped and U-shaped steel bars. The bottom is temporarily fixed with L-shaped steel bars.

· Immediately proceed with the laying of the next grid, connecting and fixing the two grids to the slope surface using U-shaped and plastic strips.

· Following the above method, connect each geogrid in sequence, and fix the perimeter of each slope geogrid with U-shaped and L-shaped anchor rods.

4. Hanging line construction and anchor rod fixation:

· Manually hang lines along the entire slope according to the specified dimensions, both horizontally and vertically, to ensure that the slope anchor rods are straight and aesthetically pleasing.

· Use L-shaped anchor rods to fix the grid in the middle of the slope according to the hanging lines.

5. Filling and leveling compaction:

· After the fixation is completed, fill the humus soil and backfill the top trench together.

· During the filling process, it should be ensured that the filling material is not directly unloaded onto the geogrid, but rather onto the already paved soil surface.

· After the filling is completed, use a bulldozer for rough leveling, and then use a manual leveling machine to accurately level.

· Use a vibratory roller to compact until the compaction degree meets the design requirements.