In this study, a 66-inch diameter pipe with wall thickness varying from 0.375-inch to 0.75-inch was modeled. The pipe was subjected first to a five foot fault offset and then buried in a peak gravel trench. Through analysis, it was found that at a D/t ratio of 176, severe ovalization occurs, with buckling of the pipe walls; for a D/t ratio of 88, moderate ovalization still occurs. The pipe strains in the hoop direction due to ovalization are not excessive in either case.
Girth joints in steel pipelines subjected to wrinkling and ovalling
1999
10 Seiten, 3 Quellen
Conference paper
English
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