Analysis and application of treatments to diminish residual deformation of saturated clay subgrade

Based on the three formed qualifications of residual deformation of saturated clay subgrade under vehicle load, the corresponding approaches to diminish residual deformation are proposed, and then the effect of five kind of treatments are analyzed and evaluated particularly, including adding base thickness, enhancing subgrade height, fixing blind drainage, reinforcement and subgrade treatment The application in out outer ring road construction in shanghai demonstrated that these methods can diminish residual deformation effectively and have great significance for popularization.