The cable supporting structure null which is used for the cable aerial construction method of the diagonal built bridge

摘要

PURPOSE:To prevent a cable from damaging by erecting the bridge stated in the title through hanging up a hanging beam, attaching a socket provided at one end of the cable to a tower, lowering the other end side to be attached to an anchoring part on the ground, separating the beam from the cable, and drawing the cable inside. CONSTITUTION:A cable A is held with holders 7 at the bottom side of a hanging beam E, the hanging beam E is hung up with a crane 9 via wires 8, and a coupler 4 attached to one end of the cable A is connected to the attachment portion 10 of a tower B. Next, the crane 9 is lowered, and a socket 6 provided at the other end side of the cable A is attached to the anchoring part 5 of a stiffening beam D. Next, hooking on the holders 7 is released by remote control, and the cable A is separated from the hanging beam E. Furthermore, the cable A is tensed in a prescribed stretched condition by a drawing-in machine at the anchoring part 5 for finishing up the erection of the cable A.