JOINT DEVICE FOR SEWERAGE MAIN PIPE CONNECTING WITH MANHOLE, AND CONSTRUCTION METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a joint device for a sewerage main pipe that can exhibit secure base isolation effect against ground change of an earthquake etc., and also prevent ground water from flowing in a manhole.;SOLUTION: Gaps 12, 22 are formed by grinding a manhole peripheral wall 10 on an outer peripheral side part of a sewerage main pipe 11, and a joint device is fitted to the gaps 12, 22. The joint device comprises a ring body 1 and elastic packings 2, 3; the ring body 1 is arranged on an inner peripheral side of the ground hole 12 and has a ring length long enough to include the sewerage main pipe 11 deep, and the elastic packings 2, 3 are arranged to the perimeter of an inner peripheral part of the ring body 1 and the perimeter of an outer peripheral part, respectively, the elastic packing 2 on the inner peripheral side being arranged over the perimeter between the ring body 1 and sewerage main pipe 11, and the elastic packing 3 on the outer peripheral side being arranged over the perimeter between the ring body 1 and manhole peripheral wall 10.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT