Abstract
Nowadays, there had been numerous researches about deformation behavior of pipelines crossing faults so far, but there had been few researches on the countermeasures. It has been observed that a pipeline crossing fault was deformed as Z-shape. Therefore, as a countermeasure for water pipeline for crossing faults, we have developed a steel pipe for crossing a fault (SPF). The SPF is capable of maintaining the water flow function and of avoiding the cracks, thanks to wave-shaped pipe section. The wave-shaped pipe section is initially installed in the positions where the plastic hinges occur.
This paper shows a math formula for identifying the plastic hinge positions, based on the results of deformation of buried steel pipe on fault displacement, according to the split-box experiments and numerical analysis.
