| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a connecting structure for a pipe whereby a branch pipe can be prevented from protruding to a main pipe even when a soil water pressure or the like is changed after execution work. SOLUTION: A connecting structure 7 for a pipe has a main pipe 1, branch pipe 2 and an elastic material-made joint 3, the main pipe 1 and the branch pipe 2 are connected by the joint 3. In the connecting structure 7 for this pipe, the joint 3 has a main pipe covering part 3a covering a periphery of a drilled part 1a of the main pipe 1 and a cylindrical part 3b covering a periphery of an insertion part 2a of the branch pipe 2, an annular unit 8 having rigidity, without coming into direct contact with the main pipe 1, is arranged in an internal peripheral surface of the cylindrical part 3b of the joint 3, the annular unit 8 comes into contact with an insertion end part 2b of the branch pipe 2, its protruding in the main pipe 1 is prevented. A cylindrical cover member 4 having rigidity of compressive deformation strength or more of the main pipe 1 covers the main pipe covering part 3a of the joint 3, the cylindrical cover member 4 is tightened to the main pipe 1 by a tightening member 5, an upper part of the cylindrical part 3b of the joint 3 is tightened to the branch pipe 2 by a tightening band 6, the joint 3 is tightened to the main pipe 1 and the branch pipe 2.</p> |
