The technology of geosynthetic reinforced soils is applied more and more widely in recent geotechnical engineering practice. For further study of reinforced soil foundation

the authors carried out several plate load tests of geosynthetics reinforced sand soil foundation

the influences of different reinforcing materials (biaxial geogrid and quaxial geogrid) and the number of reinforcing layers on the bearing characteristics of geogrid reinforced sand soil foundation are monitored and analysed. The results show that: comparing with sand soil foundation without reinforcement

the bearing behavior of geogrid reinforced sand soil foundation are improved

and the effect of two-layer reinforcement is significantly better than one-layer reinforcement. Lateral deformation of the shallow foundation is confined by the geogrid reinforcement; and the settlements of geogrid-reinforced sand soil foundation decreased under the same load; and the recoverable rebound deformation increased. The monitored strain and tension of the reinforcing material during the loading progress are very small; and the tensile modulus of the reinforcements contributes greater to the bearing capacity of the geogrid-reinforced sand soil foundation than the strength of the reinforcements.