Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8059259 | Applied Ocean Research | 2018 | 16 Pages |
Abstract
The phenomenon of wave-seabed-pipeline interactions is one of the primary concerns of coastal engineers and researchers, as it could greatly affect the seabed instability and pipeline safety. Numerous researchers have expended great effort in studying wave-seabed-pipeline interactions in the past. However, the majority of them focussed on the wave-induced response around a submarine pipeline, in buried conditions, by numerical models and laboratory experiments. Unlike the previous studies, a series of regular wave experiments and numerical model analyses were conducted to investigate the wave-induced pore pressure in the sandy seabed, around a pipeline with different backfilled depths. The model pipeline with three diameters (Dâ¯=â¯6â¯cm, 8â¯cm, and 10â¯cm) is buried in three sizes of sand, d50â¯=â¯0.15â¯mm, d50â¯=â¯0.3â¯mm, and d50â¯=â¯0.5â¯mm, with different backfilled depths. The results show that the pore pressure amplitude in the seabed is a minimum with a backfilled depth D, and a maximum with full backfill or a backfilled depth of zero. The pore-pressure amplitude increases as the backfill sand median diameter increases. The effects of the pipeline diameter on pore-water pressure are also analysed and discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Ocean Engineering
Authors
Yanyan Zhai, Rui He, Jialin Zhao, Jisheng Zhang, Dong-Sheng Jeng, Ling Li,