| 摘要 |
PROBLEM TO BE SOLVED: To lay a pipe line of aseismatic structure by providing an expansion allowance to the pipe coupling, when the pipe line is laid by a pipe jacking method. SOLUTION: This pipe coupling is provided with the pipe coupling in which an inserting port 2 is inserted into a receiving port 3 without abutting on the deepest end of the receiving port 3, band members 9, 9 fitted to the outer circumferences of the pipes by the frictional force which resists to the jacking force of the pipe, but which slides to a large external force such as an earthquake, at least two rods 10 installed for transmitting the jacking force between the band members 9, 9 fitted to the outer circumference of the pipe 1a in the vicinity of the inserting port 2 and to the outer circumference of the pipe 1b in the vicinity of the receiving port 3, a plurality of supporting legs 12 radially projected to the outer surface of each band member 9, and guide members 13 sliding or rolling along the inner surface of the sheath pipe 15 which is provided to the ends of the supporting legs 12.
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