METHOD FOR CONSTRUCTING DOUBLE ENLARGEMENT BEARING TYPE PERMANENT GROUND ANCHOR

摘要

PURPOSE: A construction method for a double-extendable bearing permanent ground anchor is provided to improving anchorage with a wedge by grouting a mounting part. CONSTITUTION: A construction method for a double-extendable bearing permanent ground anchor comprises following steps. A boring hole(1) is punched underground(S10). A double-extendable bearing permanent ground anchor is inserted into the boring hole(S20). A deep-seated blockade packer(50) of the double-extendable bearing permanent ground anchor is filled with milk in order to seal the boring hole(S30). A tension member(60) of the double-extendable bearing permanent ground anchor is tensed and a wedge(30) is expanded and is stuck underground(S40). A first grout(G1) is mounted in a space between an inner lower body(20) and a wedge and the boring hole of the fixed head(S50).