Wave-induced seabed instability around a buried pipeline in a poro-elastic seabed

✍ Scribed by Dong-Sheng Jeng; Liang Cheng

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 655 KB
• Volume: 27
• Category: Article
• ISSN: 0029-8018
• DOI: 10.1016/s0029-8018(98)00046-8

✦ Synopsis

The subject of the wave-seabed-structure interaction is important for civil engineers regarding stability analysis of foundations for offshore installations. Most previous investigations have been concerned with such a problem in the vicinity of a simple structure such as a vertical wall. For more complicated structures such as a pipeline, the phenomenon of the wave-seabed-structure has not been fully understood. This paper proposes a finite-difference model in a curvilinear coordinate system to investigate the wave-induced seabed response in a porous seabed around a pipeline. Based on the present numerical model, mechanism of the wave-induced soil response is examined. Employing Mohr-Coulomb failure criterion, the wave-induced seabed instability is also estimated. The numerical results indicate the importance of the effect of pipeline on the seabed response.