| 摘要 |
PROBLEM TO BE SOLVED: To adopt screw reinforcements as main reinforcements of a pile cage and to thereby enable two main reinforcements of the pile cage to be coupled by a screw joint.SOLUTION: A main reinforcement 11 of a pile cage 10 is constituted of a screw reinforcement. Plural main reinforcements 11, 11... are arranged with intervals in a circumferential direction of an annular reinforcement frame 13. Holding members 30 are arranged on the reinforcement frame 13, and each holding member 30 holds the main reinforcement 11 in axially displaceable and axially rotatable manners. A regulation member 20 is provided at an upper end part of the main reinforcement 11, and by hooking the regulation member 20 to the holding member 30, downward displacement of the main reinforcement 11 is restricted.SELECTED DRAWING: Figure 1 |
