SEGMENT WITH BAG BODY FOR SHIELD TUNNEL, AND METHOD FOR ATTACHING THE BAG BODY TO SEGMENT BODY FOR THE SHIELD TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a segment with a bag body for a shield tunnel, which enables the bag body to be attached in a surely anti-coming-off manner to a segment body through a one-touch operation, and a method for attaching the bag body to the segment body.;SOLUTION: In this segment with the bag body for the shield tunnel, the bag body 3 swelling by the injection of grout is attached to the outer peripheral portion of the segment body 2. A grout injection pipe 4 is fixed to a grout injection port 3A which is formed in the bag body 3, and attached in an anti-coming-off manner to a pipe 7 for a through-hole as a through-hole, formed in the segment body 2, by a fixing means 6. The fixing means 6 comprises an outer surface groove 4A which is formed on the outer peripheral surface of the grout injection pipe 4, an inner surface groove 7A which is formed on the inner peripheral surface of the pipe 7 for the through-hole, and a stopper 8 which is housed in a space (P) formed of both the grooves 4A and 7A, engaged with the both the grooves 4A and 7A and made of an arc-shaped spring body imparted with an elastic force acting in the direction of diameter enlargement.;COPYRIGHT: (C)2010,JPO&INPIT