Citation: | XU Xingyu, QI Jingjing, XU Jishang, LIU Fuxing, LI Jianing, WANG Weibin, XU Tao, ZHANG Yaxin. Influence of submarine pipeline vibration on soil liquefaction under random wave[J]. Marine Geology Frontiers, 2023, 39(10): 93-100. doi: 10.16028/j.1009-2722.2022.170 |
The interaction of submarine pipeline, soil, and water strongly affects the stability of submarine pipeline. However, the research on the change of soil properties around submarine pipeline under wave action is insufficient. The response of excess pore water pressure under wave load and pipeline vibration was studied in a series of laboratory wave flume tests. Results show that the existence of pipeline increased the accumulative pore water pressure of soil, thus enhancing the liquefaction potential of seabed. The pipeline vibration increased the accumulation degree of excess pore water pressure. In addition, wave conditions alter the response of seabed to the excess pore water pressure, namely, the increase of wave height intensify the accumulative pore water pressure. This study provided a guide to studying the pipe–soil-mass interaction and the submarine pipeline maintenance.
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The layout of the wide wave-flume in the experiment
The layout of the wide wave-flume in the experiment
The cumulative distribution curve of particle size of the test soil
Accumulative pore water pressure in test soil with and without pipeline under random wave
Variation in the maximum accumulated pore water pressure with soil depth under the same wave load conditionand different pipeline states
Variation of the maximum accumulated pore water pressure with soil depth around vibrating pipe under different wave heights (Test 3)
Variation of the maximum accumulated pore water pressure with soil depth under different period conditions (Test 4)