2025 Volume 81 Issue 13 Article ID: 24-13516
In this study, we focused on the high deformation performance of polyethylene pipes and evaluated the seismic performance of a gas pipeline network that includes PE pipes. Specifically, we divided the network into grids, and used the proportion of PE pipes buried in the grid as an explanatory variable to examine its relationship with the damage rate of screwed joints. As a result, it was confirmed that as the proportion of PE pipes buried increased, the earthquake resistance of the network improved and the damage rate of screwed joints decreased. Furthermore, we modeled a pipe containing a mixture of PE pipes, performed numerical analysis, and quantitatively confirmed its effectiveness from a mechanical perspective.
