| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint for preventing a steel-concrete composite propulsion pipe from coming off, which can sufficiently bear a load acting in a coming-off direction, even when the load is high due to an extraordinary increase in internal pressure.SOLUTION: An insertion part 10 formed at the tip of the other propulsion pipe 1b is fitted into a collar part 4 molded on the back end side of one propulsion pipe 1a; ring-shaped cut-off packing 7 is interposed in a gap therebetween; an inner peripheral surface of a back end of the collar part 4 is provided with a ring-shaped collar part-side cut-off packing stopper part 6; and an outer peripheral surface of a tip of the insertion part 10 is provided with a ring-shaped insertion part-side cut-off packing stopper part 15. |
