| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve earthquake resistance without generating coming off or the like in a connection part even when a large external load of earthquake or the like is applied relating to this connection part between a pipe line constituting a sewerage pipe and a branch pipe connected to the pipe line. SOLUTION: In a flexible unit 9 forming a pipe wall 9a in a halfway part by a rubber element material formed in bellows shape having flexibility in a bending direction relating to a pipe axial direction and the same direction to this pipe axis, a tubular part 17 of a saddle unit 4 is connected to a connection part 8 of one opening 5, and to the other opening 6, a branch pipe 3 is connected. In this way, in the case of receiving an external load of earthquake or the like, a change by this load is followed, by deflecting in a bending direction relating to a pipe axial direction of the branch pipe 3 and in the same direction to the pipe axial direction, in a sewerage main pipe 2 constituting the pipe line and the branch pipe 3 and a connection part thereof, damage or the like is prevented, coming off or the like of these connection parts is also prevented.</p> |
