REMOVABLE ANCHOR FOR CHECKING AN INSTALLATION DEPTH AND REUSING STEEL WIRE OF THE ANCHOR AND CONSTRUCTING METHOD THEREOF

The present invention relates to a removal anchor for checking an installation depth to reuse a steel strand and a constructing method thereof which can easily remove a steel strand after installation of an anchor, reuse the previously used steel strand for re-tensioning and check an installation depth of the steel strand. For this, the removal anchor according to the present invention includes: an anchor head inserted into a hole drilled in the ground; and a steel strand connected to the anchor head, wherein the anchor head includes: a steel strand penetrating hole to which one end of the steel strand is inserted; an upper head having a wedge receiving part communicating with the steel strand penetrating hole; a lower head arranged at a lower part of the upper head and connected with the upper head; a wedge, some of which is received in the wedge receiving part when the steel strand is tensioned and which is arranged on the outer surface of the steel strand in order to fix the steel strand inside the upper head; a wedge housing arranged in an inside space of the lower head to hold a lower area of the wedge; and an elastic member arranged between a lower end of the wedge housing and the bottom surface of the inner space of the lower head to push out the wedge housing in the upward direction when the wedge housing moves toward the lower side.