REPAIRING METHOD FOR BULGING OF REINFORCED SOIL RETAING WALL AND SOIL-NAIL STRUCTURE USED FOR IT

摘要

A repair and reinforcement method for the swelling phenomenon of a reinforced earth retaining wall and a soil nail structure used for the same are provided to resist additional earth pressure and water pressure without damaging geotextiles of a reinforced earth retaining wall, and to prevent the damage of shotcreate and the lowering in the efficiency of a soil nail by the flexural deformation of a steel plate. A repair and reinforcement method for the swelling phenomenon of a reinforced earth retaining wall comprises the steps of perforating a nail insertion holes(S100), inserting nails to a plurality of the nail insertion holes(S200), injecting grout materials to the nail insertion holes and curing(S300), installing welded steel wire fabrics at a certain distance from the front of the retaining wall(S400), making a pair of reinforcing bars contact with heads of the nails and fastening with the welded steel wire fabrics(S500), inserting a steel plate having a through hole at the center to the head of the nail and adhering the steel plate closely to the reinforcing bar using a nut to fasten to the head of the nail(S600), perforating a plurality of drain holes to penetrate the reinforced earth retaining wall and installing drainpipes to the drain holes to make one end extended to the thickness of shotcrete to be placed(S700), and placing shotcrete on the front of the retaining wall(S800).