Device and construction method for inserting drainage plate into ultra-low-strength saturated soft clay

The invention discloses a device for inserting a drainage plate into ultra-low-strength saturated soft clay. The device comprises an indwelling piece and a hanging piece, the hanging piece is mounted on the indwelling piece, a through hole gap is formed between the hanging piece and the indwelling piece, and the through hole gap is used for the hanging piece to sleeve on the drainage plate. The invention further discloses a construction method using the device. According to the device for inserting the drainage plate into the ultra-low-strength saturated soft clay, the drainage plate can be effectively fixed in the ultra-low-strength saturated soft clay, and return of the drainage plate is reduced; the construction method can effectively solve the problem that the drainage plate is difficult to indwell in the ultra-low-strength saturated soft clay, the construction difficulty of the drainage plate is reduced, it is guaranteed that the drainage plate is inserted to the designed depth, the return belt amount is