Manhole rehabilitation method and rehabilitation manhole joint structure

摘要

PROBLEM TO BE SOLVED: To provide a manhole renewal method and a joining part structure of a renewal manhole capable of restraining the occurrence of damage by an earthquake.SOLUTION: A renewal manhole 10 interposes an elastic seal layer 4 having viscoelasticity between vertically arranged manhole renewal members 2, and a collar member 5 is arranged over a lower end part of the upper side manhole renewal member 2 and an upper end part of the lower side manhole renewal member 2 on the outer peripheral side of an elastic seal layer 4. In the elastic seal layer 4, a seal member 42 is arranged along an inner peripheral surface of the collar member 5 near the outer periphery of the manhole renewal member 2. A spacer member 41 for securing an interval between the mutual upper-lower manhole renewal members 2 is provided near the inner periphery of the manhole renewal member 2. These seal member 42 and spacer member 41 are press-fitted to respective end surfaces of the upper-lower manhole renewal members 2.SELECTED DRAWING: Figure 8