| 摘要 |
PROBLEM TO BE SOLVED: To provide a repair structure that prevents deviation and falling, for repairing an existing manhole without a measure implemented for preventing deviation.SOLUTION: A repair structure is for an existing manhole configured by piling up cylindrical constituent members. A groove is formed from an inner peripheral surface side of the piled constituent members (a straight wall piece 2, an oblique wall piece 3) on at least three locations that almost equally divide a circumference of the inner peripheral surface, across a connecting part 10 of the piled constituent members. A shear-proof member (a shear plate 11) is inserted into the groove for connecting the piled constituent members via the shear-proof member, such that the shear-proof member resists forces of different directions that are exerted on the piled constituent members and then cause deviation.SELECTED DRAWING: Figure 1 |
