FABRICATION METHOD FOR PRESTRESSED CONCRETE BEAM

摘要

The present invention relates to PSC beam construction method, and more particularly to a PSC beam construction method capable of more effectively performing prestressing by using a simple and recoverable structure. Provided is the PSC beam construction method comprising: a PSC beam manufacturing step for manufacturing a PSC beam while screw grooves are being formed upwards, being arranged in a bridge, and the screw grooves of a settlement nut with a closed lower part is being arranged in both sides of the upper surface of the PSC beam; a settlement member fixing step for fixing a settlement member including a settlement unit so that tendons can be settled after the PSC beam is completely constructed and combining a volt member, which can be combined to the screw grooves, to the screw grooves to be fixed to the upper surface of the PSC beam; a first prestressing step for settling both end parts of the tendons in the settlement unit while tensile force is being applied to the tendons in order to apply a bending moment toward the opposite direction of a self-load and a compressive force to the PSC beam; a mounting step for mounting the PSC beam to the lower structure of the bridge after the first and second prestressing steps are completed; and a first prestressing releasing step for releasing the tensile force of the tendons settled in the first prestressing step after the settlement step.