Glass fiber geogrids is a kind of inorganic fiber of geotechnical material, because of its high and low temperature resistance, resistance to chemical corrosion, high elastic modulus, high strength, low elongation and low cost compared with other geotechnical data, such as the primary performance has more obvious advantages, in recent years, agile is widely used in highway engineering.
The following is the first embodiment of the glass fiber earthwork grate in the roadbed:
1) stability of progressive roadbed;
2) because of its flexibility and high elastic modulus, it can effectively absorb the energy transmitted by the oscillation, so it has outstanding earthquake resistance.
3) the shear deformation ability of the upper part of the upper packing will be fully played through the horizontal dispersion of the upper part of the upper packing by the glass fiber geogrid.
The surface of soft soil can be expanded to expand the bearing area of soft soil foundation.
The pressure of the exterior is greatly reduced, the strength of the foundation is strengthened and the bearing capacity of the foundation is improved.
4) adjustment of uneven settlement: the tensile stress effect of the glass fiber geogrid will decrease the vertical stress of the soil under the interface, thus reducing the vertical contraction of soil mass.
Because the pretension and differential settlement results in the deformation of the glass fiber geogrid, the interfacial shear stress is balanced in this tensile stress.
The interfacial shear stress causes the root subsidence area to produce a certain size of arch deformation, and this arch deformation partially negate the settlement of the bottom or subgrade.
Post time: Sep-04-2017