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Construction method for under-ground structure construction using t-shaped guider with lagged flanges

PURPOSE: A construction method of an underground structure using a T-shaped guide unit with lagged flanges is provided to rapidly press a steel pipe by securing an enough steel pipe inner space. CONSTITUTION: A construction method of an underground structure using a T-shaped guide unit with lagged flanges is as follows. A standard steel pipe(100) is inserted into the ground(A). An opening(110) for a guide is formed in the steel pipe. An adjacent steel pipe(200) with a T-shaped guide unit(220) is inserted into the ground to be contiguous to the standard steel pipe. An opening for a guide(210) is formed in the adjacent steel pipe. The other adjacent steel pipe(300) with a T-shape guide unit(320) is inserted into the ground to be contiguous to the adjacent steel tube. The steel pipes are filled with filler, such as concrete.