| 摘要 |
PROBLEM TO BE SOLVED: To provide a back face pipe which positively exerts watertightness when component parts of an anchor head and a head back face of a ground anchor are replaced irrespective of the state of a sheath material, and to provide an anchor repairing method using the back face pipe. SOLUTION: The back face pipe is set on the head back face of the ground anchor. According to the structure of the back face pipe, an external dimension of a region on a ground side (E) is larger than that of a region of an underground side (G), and a front end on the underground side (G) is insertable into a region inside a sheath member (4) covering a tendon (1). Further the back face pipe has flexibility that can deform the cross section thereof into a similar figure to the cross section of the sheath member (4) when inserted into the sheath member (4), and has projections (55) formed over the entire peripheral area in the vicinity of the front end on the underground side (G). COPYRIGHT: (C)2008,JPO&INPIT
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