| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pile head processing jig that can properly form charge holes and the like.SOLUTION: A pile head processing jig 10 is used for dismantling extra-banking concrete 45 in creating a pile on the spot. The jig comprises: an upper ring 1 for mounting to main reinforcements 35 of the pile; and a lower ring 9 connected to the upper ring 1 via vertical charge tubes 21 and formed of wire rods, for mounting horizontal charge tubes 23. Also, positions of bars 5 of the upper ring 1 correspond to positions of the horizontal charge tubes 23 in a circumferential direction. The vertical charge tubes 21 and the horizontal charge tubes 23 function as charge holes for charging a crushing agent when dismantling the extra-banking concrete 45 with the crushing agents. Further, a tube body that functions as an insertion hole of a hydraulic crusher may be used instead of the vertical charge tubes 21 and the horizontal charge tubes 23, when using the hydraulic crusher for dismantling the extra-banking concrete 45.</p> |
