Angle hollow precast pile

The utility model relates to a ground pile, in particular to a triangle hollow precast pile. The technical proposal of the utility model is that the ground pile is a prism pile formed as that a reinforcing rib cardinal shelve in triangular distribution is bound by a tripod rest stud and is cast with concrete inside; a hollow cylinder with the length one third to one tenth of the single circumferential length of the pile is precast along the axis of the pile; a prism cone which is arranged under the cylinder is formed by steel plates in welded connection and is welded integrally with the reinforcing rib cardinal shelve. By the adoption of the precast pile with the structure, the surface area is increased by more than 13 percent while the volume is not changed; compared with the square precast pile and the solid triangular pile, the concrete is saved by more than 20 percent while the resistance length are the same; thereby the construction demands can be met, meanwhile, the investment can be saved and the construction difficulty can be decreased.