Two common forms of biaxial geogrid retaining wall：
Whether it is natural steep slopes, or artificially filled railways, highway embankments, water retaining dams, and earth embankments, the application of supporting structures is to reinforce the geogrid in the fill, relying on them to balance the earth pressure. There are two common types of retaining structures built by geogrids: strip type and wrapped type.
Strip structure: Generally, high-strength two-way geogrids are arranged at a certain interval in the fill, one end of which is connected with the panel on the edge of the structure, and the other end extends the required length into the soil. The wrapped structure often uses geotechnical The grids are spread all over the picture, and soil is filled and compacted on each layer, and the grid at the outer end is rolled back to a certain length, and then another layer of grids is placed on it, and each layer is filled with soil The thickness is usually 0.3~0.5m, and the soil is filled and compacted according to the front method until it reaches the required height. After filling, a surface slope is set on the outside.
Advantages of biaxial geogrid retaining wall:
1. The "reinforced soil" constructed with the two-way geogrid effectively increases the overall force strength of the filling body.
2. Improve the compactness of each layer of the filling body.
3. Can reduce the cost.