High-strength concrete PHC pile having reinforcing channel and grouting injection pipe, and soil retaining wall construction method and ground reinforcement method using same

Abstract

The present invention relates to a high-strength concrete PHC pile having a grouting injection pipe, and a soil retaining wall construction method and ground reinforcement method using same. The high-strength concrete PHC pile according to a suitable embodiment of the present invention comprises: a hollow pile body made of high-strength concrete; spiral steel wires embedded in the concrete in the pile body; PC steel rods disposed in an axial direction of the pile body, circularly arranged in contact with the spiral steel wires, and embedded in the concrete of the pile body to introduce compressive stress into the concrete; and one or more grouting injection pipes having a grouting inlet exposed at an upper end of the pile body and a grouting outlet formed in a radial direction of the pile body for soil retaining wall construction or ground reinforcement.

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