Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils
Adriano Castelo, David White, Yinghui Tian
OCEAN ENGINEERING | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2019
Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is benchmarked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and ..View full abstract
This research forms part of the activities of the Centre for Offshore Foundation Systems (COFS), established under the Australian Research Council's Research Centres Program and currently supported as a node of the Australian Research Council Centre of Excellence for Geotechnical Science and Engineering. The authors acknowledge the support from The University of Western Australia and Shell.