| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently perform operation to repair a protection pipe of an existing bridge having a slanting suspension material formed by covering a steel-made cable with the protection pipe while securing safety. <P>SOLUTION: After a first FRP pipe 60 which covers a slanting suspension material 20 over a predetermined length at a predetermined interval is mounted on a lower end of the slanting suspension material 20, the first FRP pipe is lifted along the slanting suspension material 20 toward its upper-end part by the predetermined length. After a second FRP pipe 60 is mounted on a lower end of the slanting suspension material 20 and coupled to the first FRP pipe 60, they are lifted by the predetermined length, and then similar operation is repeated to cover the slanting suspension material 20 substantially over its whole length with an FRP pipe succession body 50 having a plurality of FRP pipes 60 united together. Consequently, a protection pipe 24 can be repaired uniformly by repeating the fixed operation and also repaired wherever the protection pipe 24 cracks with respect to the slanting suspension material 20 without requiring any dangerous high place work. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
