PHC Cantilever Earth Retaining Wal1 Construction Method Using PHC Pile And Key Block

摘要

The present invention relates to a method for constructing a self-supporting permanent retaining wall using a PHC file and a key block, and more particularly, a PHC file as a front retaining wall part and at least one row formed without a separate foundation part. The present invention relates to a method for constructing a self-supporting permanent retaining wall using a PHC pile and a key block that can reduce the site area for work to a minimum by forming a permanent retaining wall by constructing and integrating and integrating it. One preferred embodiment of the present invention comprises the steps of: (a) forming a rear retaining wall by injecting a plurality of PHC piles perpendicular to the ground in parallel with one row to form the retaining wall; (b) forming a front retaining wall portion by incorporating a plurality of PHC piles on the front surface of the rear retaining wall portion so as to intersect with the PHC pile of the rear retaining wall portion; (c) curing by filling concrete in the PHC pile embedded in the ground; (d) digging the ground in front of the front retaining wall portion to a predetermined depth; (e) installing anchor bolts from a height of the exposed front retaining wall portion PHC pile to a certain depth of concrete of the PHC pile of the rear retaining wall portion; (f) digging to a predetermined depth by repeating steps (d) to (e); (g) finishing the upper portion of the PHC pile of the rear retaining wall portion and the front retaining wall portion with cap concrete.