慢速滑动泥流对海底管道的作用力研究 English Version
Pressure on submarine pipelines under slowly sliding mud flows
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摘要: 海床的滑动泥流会对全埋在其中的海底管道产生影响。主要基于流滑海床模型槽,采用PVC管进行一系列模型试验,模拟在慢速滑动的海床中管道的受力特性。结合18组试验数据的分析,得到了管道受力的一般规律;并进一步通过有限元计算细化分析,得到了管道受力随埋深变化的拟合公式。该公式可为海底管线的工程设计提供参考。Abstract: There might be some effect of slowly sliding mud flows of the seabed to the submarine pipelines.Experimental investigations were carried out in a model flume to study pressure on the pipelines generated by slowly sliding mud flows.PVC pipes were used to simulate the submarine pipelines and mud was selected as the material of the seabed.Further work was done to discuss the effect of burial depth on the magnitude of pressure by use of the finite element method.Based on the test results and FEM analysis,a regression formula of the pressure acting on the pipelines was suggested.The formula would be beneficial to the engineering design of the pipelines.
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Keywords:
- slowly sliding mudflow /
- submarine pipeline /
- pressure /
- burial depth
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