Abstract: A simplified analysis model considering two-parameter ground model and the Coulomb friction assumption was proposed to investigate reinforced pavement’s deformation behaviours and bearing capacity. The computation results show that geosynthetics constructed in pavement can reduce about 50% depth of granular filling layer for same pavement deformation. The peak value of tensile strain in geosynthetics appears in 1.5-2.0 times of load range. The bearing capacity of reinforced pavement increases by 15% compared to non-reinforced pavement when the bending stiffness of geosynthetics is taken 0. Pavement’s bearing capacity improves greatly with increasing geosynthetics bending stiffness. In addition, the bearing capacity of pavement can be increased by 33% approximately in the case of same depth of granular fill.
 

Key words: geosynthetics-reinforced pavement, deformation behavior, granular fill depth, bearing capacity