| 摘要 |
PROBLEM TO BE SOLVED: To provide a hose connection device for grout reinjection to which a grout injection hose and other appliances can be easily mounted while suppressing damage of a PC structure to a minimum.SOLUTION: The connection device comprises a plug body 21 which is inserted into an opening of a work hole 43 opened in an existent PC structure 40, and a support plate 20 for holding the plug body. The plug body 21 includes: a disc-shaped expanding/shrinking plate 22 formed of a rubber-like elastic material which can be inserted into the opening of the work hole 43; a pressurizing plate 23 which is abutted to a surface at an opposite side to the support plate 20; and a pressurization manipulator 24 which performs pressurization and cancellation of pressurization on the expanding/shrinking plate 23 by moving the pressurizing plate 23 closer to and away from the support plate 20. The expanding/shrinking plate 23 is compressed in an axial direction via the pressurizing plate 23 by the pressurization manipulator 24, such that the expanding/shrinking plate 23 is expanded in a radial direction and the outer circumferential surface thereof is brought into press-contact with an inner circumferential surface of the work hole 43. |
