CONTRACTING FORCE INTRODUCTION DEVICE FOR PC STEEL ROD UNIT

摘要

PROBLEM TO BE SOLVED: To provide a contracting force introduction device for a PC steel rod unit capable of simultaneously introducing a contracting force to the plurality of PC steel rod units.;SOLUTION: A hollow PC steel rod 19 having a male thread on a rear end part outer peripheral surface, a reaction force core metal 20 made of a PC steel rod inserted in the hollow PC steel bar, a core metal stopper 21 for contacting and positioning the tip of the reaction force core metal at the tip of the hollow PC steel rod, a base 18 for supporting the hollow PC steel rod, a tension jig 14 screwed to the rear end part of the hollow PC steel rod and capable of inserting a tool from the insertion port 14A, pushing rod 17 which is brought into contact with a rear end of the reaction force core metal; and PC steel rod unit which is composed of a rod stopper 15 screwed on the inner surface of the tension jig behind the pushing rod and through which the pushing rod is inserted into the central insertion hole 15B; a fluid cylinder 13 for pushing the push rod by the piston rod, a fluid source for supplying fluid to the fluid cylinder, and an operation tool inserted from an insertion port of the tension jig and threadingly advancing the rod stopper are provided.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT