| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection structure for a manhole rehabilitation member used for rehabilitating an existing manhole that may be connected readily and maintains water cut-off performance even when a joint between the manhole rehabilitation members opened at a time of earthquake.SOLUTION: A connection structure is for manhole rehabilitation members 1, 2 used for rehabilitating an existing manhole. Rubber packings 45, 46 are fixed respectively on an outer peripheral surface of an upper edge part 1a of the lower manhole rehabilitation member 1 and a lower edge part 2a of the upper manhole rehabilitation member 2. The lower edge part 2a is inserted into a socket formed by fitting a part of a collar member 3 into the top edge part 1a, the collar member having an inner peripheral surface with which the rubber packings 45, 46 come in contact, while being fitted externally on the lower and upper manhole rehabilitation members 1, 2. The rubber packings 45, 46 have two ring-form lip parts 45a, 45b,... that protrude outward in an axial direction leaving an interval. A gap C1 is formed between the ring-form lip parts 45a, 45b,..., while the collar member 3 is fitted externally on the top edge part 1a and the lower edge part 2a.SELECTED DRAWING: Figure 4 |
