| 摘要 |
PROBLEM TO BE SOLVED: To provide a hand hole joint structure and a construction method thereof which is easy to construct, makes it possible to reduce a construction period, and excels in finish after construction.SOLUTION: The hand hole joint structure includes a connection tube 2 and a protective tube 3. The connection tube 2 is inserted from the inner circumference side of the peripheral wall 1 of the hand hole into an insertion hole H provided in the peripheral wall 1 of the hand hole, with an engagement part 6 stretching out to the outer circumference side included at the end on the inner circumference side of the peripheral wall 1 of the hand hole of the connection tube 2 and a buffer member 4 fitted on the outer circumference of the tube held between it and the peripheral wall 1 of the hand hole of the connection tube 2, the buffer member 4 blocking a gap between the insertion hole H into which the connection tube 2 is inserted and the peripheral wall 1 of the hand hole. The protective tube 3 is inserted inside the connection tube 2 and in contact with a reception part 7 provided in the inner circumference of the connection tube 2, the outer circumferences of the protective tube 3 and connection tube 2 being covered with a cover material 5 that blocks a clearance in a place where the protective tube 3 and the connection tube 2 are connected.SELECTED DRAWING: Figure 1 |
