| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for inserting a propulsion pipe 3 or the like without providing scaffolding between an existing structure a and a bracing wall c of a shaft e when the bracing wall is positioned close to the existing structure.SOLUTION: A support 1 is protrusively provided on each of surfaces of an existing structure a's bracing wall side and the bracing wall c's existing structure side. A hollow hollow pipe 2 is mounted on both support 1 in a state in which the hollow pipe 2's inlet is open on the bracing wall c's shaft e side and the hollow pipe 2's outlet 22 is in contact with the existing structure a. A through hole is opened by dismantling the existing structure a on the hollow pipe 2's outlet 22 side, before pressing-fitting a propulsion pipe 3 inside the hollow pipe 2.SELECTED DRAWING: Figure 1 |
