The present invention takes structural stability by filling the high pressure grout material between the sheet pile and the excavation front part in consideration of structural weakness when there is a gravel layer on the top of the rock layer, and can significantly shorten the air by using the high pressure grout material. To provide a grout-type composite steel sheet pile and a construction method thereof, which not only saves the time required for forming the order pile of the sheet pile and the rock surface, but also increases the structural stability by constructing the temporary facility after the formation of the structure. There is a purpose. Grout-type synthetic steel sheet piles according to the present invention for achieving the above object is entered into the rock bed, H piles arranged at regular intervals; A wall formed by entering a sheet pile so as to be located at one side of the H pile; An order wall on which the grout material is poured between the H pile and the sheet pile; Characterized in that consisting of a band installed in the horizontal direction of the inner side of the H-pile. In addition, the grout-type composite steel sheet pile construction method according to the present invention for achieving the above object comprises the steps of forming a plurality of holes by drilling the soil layer and rock layer; Injecting an H pile into a rock layer in the drilling hole; Forming a wall by accessing the sheet pile to the rock layer so as to be located at one side of the H pile; Forming a plurality of grout holes by drilling the soil layer and the rock layer at a portion spaced apart from the drilling hole by a predetermined distance; Filling and curing the grout material into the grout hole to form a water order wall; Characterized in that the step consisting of installing the strip in the horizontal direction of the inner side of the H-pile.
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