软基路段水泥稳定碎石基层裂缝处治方法

In order to reduce harms of cracks of cement-stabilized crushed stone base, the longitudinal direction and cross direction cracks, which occurred on cement-stabilized crushed stone base in the north road of Foshan No.1 Ring Expressway, were taken as an example. Formation causes of cracks were analyzed according to geological conditions, soft ground improvement conditions and changing of external environment, some treatment methods were proposed and disposal effect was evaluated by contrasting subsequent deformation of cement-stabilized crushed stone base. The results indicate that cracks of cement-stabilized crushed stone base can be efficiently suppressed by use of surcharge reloading; when the old roads on soft foundation were widened, the composite foundation should be adopted to avoid the cracks caused by lateral displacement and stress relief in the period of dredging and replacement. In order to reduce cracks caused by differential settlement, the alternation of soft foundation treatment methods should be reduced to a minimum.