| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an earthquake resistant piping method which can absorb a displacement to sufficiently meet a large scale displacement of the ground. SOLUTION: In the connection part of plural conduits 23 for constituting a pipeline 22, plural usual joints 20 and expansion/contraction joints 25 are used mixingly. In the expansion/contraction joint 15, a big slide displacement in a pipe axial direction is possible between an outer cylindrical pipe 26 and an inner cylindrical pipe 27. In one outside of the outer cylindrical pipe 26 or the inner cylindrical pipe 27, a solidified clod of earth 30 is formed and fixed for a ground 21. Even if the horizontal movement of ground displacement direction 24 by a big earthquake is generated in the pipe axial direction of the pipeline 22, the outer cylindrical pipe 26 is displaced along with the ground 21 and the relative displacement called a slip for ground 21 is generated in the inner cylindrical pipe 27. As this result, as the expansion/contraction joint 25 produces a big silide deformation, the ground displacement is absorbed.</p> |
