| 摘要 |
PURPOSE: An earth anchor is provided to act frictional force with grout, frictional force with the ground and bearing pressure complexly on a fixed part in the earth by spreading a fixed part radially in the earth. CONSTITUTION: An earth anchor comprises an anchor shaft(50) formed longitudinally in a straight line and buried in the earth, a spreading bar(60) installed integrally on the outer circumference of the anchor shaft in the circumferential direction and shielding by covering the anchor shaft, a mounting member(70) mounting the spreading bar on the outer circumference of the anchor shaft to be movable, and a spreading member(80) guiding the end of the spreading bar, moved by a fixing ring(74) of the mounting member, to the outside and spreading radially. |
