The aim of this paper is to analyze composite soil nailing support with limited equilibrium method and to investigate the influence of retaining parameters on the stability of soil nailing structure.
According to application of this structure in Nanjing deep excavation, the basic rules of concrete-core DCM pile retainingstructure in stress and deformation in the soft soil area were obtained.
Change of soil pressure is the result of interaction between soil and retainingstructure. Soil pressure level and distribution model are related to retainingstructure deformation.