ASEISMATIC CONSTRUCTION METHOD FOR EXISTING PIPE MANHOLE CONNECTION PART

摘要

PROBLEM TO BE SOLVED: To provide an aseismatic construction method for existing pipe manhole connection part, which can attain imparting of earthquake-resistance and reduction in time and effort of operation without damaging buried structures such as an underground cable and a buried pipe for various fluids present near the circumferential wall of a manhole and without affecting the strength of the manhole. SOLUTION: The aseismatic construction method for existing pipe manhole connection part for making an existing pipe manhole connection part 6 in which an existing pipe 2 is fitted in a pipe hole 5 of the circumferential wall 4 of a manhole 3 earthquake-resistant includes steps of: annularly cutting off the existing pipe 2 fitted to the pipe hole 5 of the circumferential wall 4 of the manhole 3 in a position within a predetermined range which does not exceed an inner circumferential wall surface 10 and an outer circumferential wall surface 11 of the circumferential wall 4 of the manhole 3 to form an annular cut-off part 12 within the pipe hole 5 of the circumferential wall 4 of the manhole 3; providing an elastically deformable elastic water-stop annular part 13 within the annular cut-off part 12 formed within the pipe hole 5 of the circumferential wall 4 of the manhole 3 so as to be liquid tight with the annular cutout part 12; and disposing a lining pipe 14 inside the existing pipe 2 and the elastic water stop annular part 13 so as to extend over the elastic water-stop annular part 13. COPYRIGHT: (C)2011,JPO&INPIT