Pile foundation and pipe piece connecting method and device

The invention relates to the technical field of tunnel construction, in particular to a pile foundation and pipe piece connecting method and a connecting device thereof.The method comprises the following steps that S1, a pipe hole is reserved in a pipe piece, and an orifice pipe is installed in the pipe hole; s2, a pile foundation is driven into the orifice pipe, and the part, extending out of the pipe piece, of the orifice pipe is cut off; s3, the end of the orifice pipe is connected with a first baffle, and the first baffle limits the pile foundation in the orifice pipe; and S4, a second baffle is installed at the orifice part of the pipe hole, the second baffle is connected with the pipe piece, and the orifice pipe and the pile foundation are limited in the pipe hole through the second baffle. The first baffle is connected with the end of the orifice pipe, so that the pile foundation is limited in the orifice pipe, the first baffle forms a first safety guarantee for the pile foundation, the second baffle i