| 摘要 |
<p>A ground anchor is to easily remove two or more tension members which are caught tightly in the ground anchor. The ground anchor includes a body (1) having an annular stepped portion (31) at a lower end of an inner circumference thereof and a wire insertion hole (12) formed on the stepped portion (31). A support (2) made of thermoplastic resin (21) seats on the stepped portion of the body (11). The support (2) has a heating member buried therein and a cable (23) which passes through the wire insertion hole (12) and is connected to an external power supply. On the support, a wedge case (3) is positioned. The wedge case (3) has a plurality of tapered holes (33) formed on an upper portion thereof and a plurality of semicircular grooves (34) formed at predetermined intervals along the circumference of the tapered holes (33). A wedge (4) of an inverse cone shape is inserted into the wedge case (3). The wedge (4) has a plurality of tapered portions (41) arranged at the same intervals with the tapered holes (33) of the wedge case (3) and a plurality of semicircular grooves (42) formed in the same number with the semicircular grooves (34) of the wedge case (3). A cover (5) having a hole (51) for inserting a bolt (6) is screwed with an upper portion of the body (1). The bolt (6) inserted into the hole (51) of the cover (5) is coupled with the wedge (4) for preventing the movement of the wedge (4). Under the head of the bolt (6), a low elastic ring (7) is located for providing the bolt (6) with space to move in the tension direction.</p> |
