Stresses and Deformation of Buried Pipeline under Wave Loading

by D. S. Jeng, Lectuer; School of Engrg., Griffith Univ. Gold Coast Campus, PMB 50 Gold Coast Mail Ctr., QLD 9726, Australia,
P. F. Postma, Undergraduate Student; School of Engrg., Griffith Univ. Gold Coast Campus, QLD, Australia,
Y. S. Lin, Prof.; Dept. of Civ. Engrg., Natl. Chung-Hsing Univ., Taichung, Taiwan, 402, ROC,

Serial Information: Issue 5, Pg. 398-407

Document Type: Journal Paper

Abstract: An evaluation of wave-induced pore pressures and effective stresses has been recognized by marine geotechnical engineers as an important factor in the design of offshore pipelines. Most previous investigations for the wave-seabed-pipe interaction problem have not considered the material of the pipeline. Thus, the internal stresses and deformation of the pipeline have not been investigated in the wave-seabed-pipe interaction problem. This paper considers the pipeline itself as an elastic material and links the analysis of the pipeline with the wave-seabed interaction problem. Based on the numerical results presented, the effective stresses in the angular direction σθθ and shear stress τ within the pipe are much larger than the wave-induced pore pressure.

Subject Headings: Buried pipes | Stress waves | Deformation (mechanics) | Pipe materials | Load factors | Offshore pipelines | Effective stress | Shear stress | Elastic analysis | Pressure pipes | Pore pressure | Geotechnical engineering |

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