EARTH ANCHOR AND CONSTRUCTION METHOD THEREOF

摘要

PURPOSE: A method for constructing a structure of an earth anchor is provided to expand a packer by using urethane foam fluid of rapid expanding material as a filler injected to the packer and to operate pressure grouting of a fixed field. CONSTITUTION: An earth anchor structure(10) comprises plural earth anchor cables(11); a packer(12) closing a middle portion of an earth anchor hole(H) by being connected to a middle portion of the earth anchor cable; a filler injection pipe(13) for the packing; a grouting injection pipe for fixing in a closed fixing space(h) by the packer; and a grouting material injection complete checking pipe(15). An end of the earth anchor cable is fixed to a bracing structure(S) and the other end is inserted to the earth anchor hole. Thereby, the earth anchor structure reduces consumption amount of the grouting material by preventing leakage of the grouting material for fixing.