Abstract
In an earthquake caused by an active fault, a gap of the fault may reach several maters. Then buried pipelines for water may be greatly affected. Therefore, water pipelines across a fault must be designed carefully. However, very little research has studied in detail the behavior of underground ductile iron pipelines in response to fault movements, and the design method is not established. In addition, the example that ductile iron pipes with earthquake resistant joints were buried across a fault which moved while an earthquake is not reported.
Therefore, in this study, we analyzed the behavior of ductile iron pipes with earthquake resistant joints buried across a fault and verified the analysis results through the experiment using the actual pipes. Furthermore, we inspected an improvement measure of the safety of ductile iron pipelines with earthquake resistant joints.
