| Buried pipeline may be subjected to various complex combinations of forces and deformations. As a result, localized curvature and strains may occur in the pipe wall and wrinkle may form. The wrinkled pipeline may then develop a rupture and lose its structural integrity if it is subjected to further sustained deformation and/or load. This research program was designed to evaluate the post-wrinkling behaviour and structural integrity of wrinkled pipeline subjected to lateral and axial loads and internal pressure. This research program included both experimental and numerical studies.;This study shows that a pipe does not fail in rupture if the pipe is subjected to an axisymmetric axial monotonic deformation and wrinkle is developed. However, a rupture is developed in the wrinkle region if the wrinkled pipe is subjected to lateral deformation. Parametric studies were also undertaken to understand the effect of D/t, and internal pressure on pipe failure mode. |
