Research of super-longhole bored pile in loess subsoil

Based on the research of vertical static loading test for super longhole bored pile in loess subsoil, this paper discusses the bearing capacity behavior of super longhole bored pile in loess subsoil, the transmission of axial force and the action of lateral friction which are influenced by construction quality and significant to the design,construction and research of cast in situ pile in loess subsoil