Case Study of Enhanced HRDIP Pipeline Design and Construction for Fault Crossing Location

The hazard-resilient joint was developed in 1974 and has since been continuously improved. This joint has been widely adopted as a safety measure for faults, earthquakes, and landslides, because hazard-resilient joint pipelines can absorb large ground displacements due to the joint movements (expansion, contraction, and deflection) and the function of the joint locking system. However, designing a suitable hazard-resilient pipeline for fault displacement requires technical skills. This study proposes a design method for a water pipeline that is resistant to fault displacement by incorporating a hazard-resilient ductile iron pipe pipeline. A case study regarding hazard-resilient pipeline safety evaluation using the finite element method is conducted to assess the design of a hazard-resilient pipeline. Moreover, the assembly time measurements of the joints at an actual site are presented. The obtained measurement results can shed light on the ease of hazard-resilient joint assembly and the estimated assembly cost.