| 摘要 |
PURPOSE: A prestressed composite pile is provided to minimize the corrosion of a steel material, to heighten economical efficiency by reducing the sectional area of a steel material, to reduce an obstacle of working environment by minimizing or avoiding using a strut, and to distribute resistant moment corresponding to the bending resistant moment of a pile by earth pressure of a retaining wall. CONSTITUTION: The prestressed composite pile comprises the steps of connecting two I-shaped steels formed to be deflected downward, then turning the center out to be risen to place over bearing points of both ends to make two preflex composite piles simultaneously, adding load to a maximum moment point on the connected I-shaped steel upper flange(30) to occur bending tension to a lower flange(10), placing casing concrete(20) to the lower flange(10) of the I-shaped steel, after curing the concrete surface(20) placed on the lower flange(10) of the I-shaped steel, adding a prestressed compressive force to the concrete(20) covered the lower flange(10) by restoring force of the I-shaped steel by removing load(P) and separating the connected center, placing concrete(40) covering the upper flange(30) of the I-shaped steel, then curing the concrete surface to complete two piles.
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