Steel sheet pile connecting structure

The utility model belongs to the technical field of engineering construction, and particularly relates to a steel sheet pile connecting structure which comprises a steel sheet pile body, a connecting column is installed at one corner of the steel sheet pile body, and a clamping ring is installed at the other corner of the steel sheet pile body. A rectangular groove is formed in any one of the other two corners, except the two corners where the connecting columns and the clamping rings are installed, of the steel sheet pile body, the rectangular groove is symmetrically formed relative to the diagonal connecting line of the other two corners, and the interior of the rectangular groove can be used for being connected with a pay-off plate in a clamped mode; supporting columns can be arranged between the two rows of steel sheet pile bodies in a connected mode, through the structural design of the rectangular grooves and the pay-off plates, the steel sheet pile bodies needing pile descending can be connected with t