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Geogrid in strengthening embankments and slopes

Георешетка в укреплении насыпей и откосов

Increasing the resistance to the occurrence and spread of erosion and increasing the performance characteristics of slopes can be achieved by creating a reinforcement layer on the surface of the embankment. In this case, the strengthened slope will retain its integrity even under unfavorable conditions. Today, to strengthen the mounds, an effective solution is used - the geogrid.

The use of a bulk geogrid for strengthening embankments is especially important in urban cramped conditions, with insufficient width of the right-of-way, when roads are being reconstructed, etc.

Slopes with a steepness of up to 90 ° based on the geogrid - an excellent alternative to more expensive retaining walls of stone and concrete. The lattice task in these constructions is to ensure resistance to collapse. In this case, the geosynthetics work together with the soil, partially perceiving the arising tensile stresses that cause the slope to shift.

One of the most difficult places to fortify embankments include areas of abutment of the foundations of bridges or overpasses to the approach embankment. In this case, at the end of the embankment by an armorrant wall, due to the occurrence of a gap between the cabinet wall and the embankment, the wall is unloaded from the lateral pressure of the ground layer. The transition plate in this case should rest on 2 supports: a crushed stone and a clamp. This ensures a redistribution of the load from the mound to the mound. Most often in such constructions the geogrid is used in the form of horizontal strips. The ends extend beyond the slip curves with the formation of open clips.

The use of a geogrid allows increasing the cohesion of the ground by jamming soil particles in geosynthetic cells. As a result, a stable system is formed, where the forces transferred to the geogrid and soil are uniformly redistributed throughout the area.

The principle of the geosynthetic lattice is to fill the cells with ground or rubble. At the same time, the filler mass and rigid construction of the geogrid prevent the shift of the upper soil layer with a simultaneous increase in the bearing capacity. This technology is particularly relevant for loose and heterogeneous soils.

The walls of the cells are usually perforated, which ensures an already effective drainage of the soil, accelerated development of the root system of sown grasses. Installation of geogrid modules is quite simple and without the involvement of expensive equipment and special equipment, which best affects the cost of construction. Also, the geotextile laid under the geogrids and prevents the spillage of the filler helps to save on construction costs.

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