UNDERGROUND ANCHOR, AND ANTISEISMIC REINFORCEMENT METHOD OF ARTIFICIAL SLOPE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an underground anchor that can be reliably fixed on the ground regardless of properties of the soil, enabling construction to be performed simply and quickly, and having a simple configuration.;SOLUTION: An underground anchor 10 is constituted by including: a tension rod 12 inserted in an excavation hole; a plurality of rod-shaped anchoring members 18 turnably attached at a tip part of the tension rod 12, and radially expanded relative to the tension rod; a stopper 22 for regulating an expansion operation of the rod-shaped anchoring members so that the rod-shaped anchoring members 18 do not expand by exceeding 90°; a leaf spring 24 for biasing the rod-shaped anchoring members 18 to the widening direction thereof; a retainer member 26 for restraining the rod-shaped anchoring members 18 in a closed state by inhibiting the rod-shaped anchoring members 18 from expanding against the biasing force by the leaf spring 24; and a rope 30 for releasing a restrained state of the rod-shaped anchoring members 18 by the retainer member 26, and expanding the rod-shaped anchoring members at a stroke by the biasing force of the leaf spring 24.;COPYRIGHT: (C)2015,JPO&INPIT