Free span resulting from unevenness of seabed or scour of current is a dangerous status for submarine pipeline. Fatigue failure caused by vortex induced vibration (VIV) is one of the main failure modes for free span. Because of the contact between soil and pipeline, the effect of soil must be considered for the fatigue analysis of free span. In this paper, aimed at one in-service submarine pipeline, the research on the VIV response of free span was investigated considering the effect of stiffness and damping of soil. Furthermore, fatigue damage and fatigue life of free span were evaluated based on the actual measured flow velocity data varied with time. The analysis results have provided support for the maintenance of free span for the submarine pipeline.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5702-1
PROCEEDINGS PAPER
The Effect of Soil on the Structural Response and Fatigue Life of Free Span for Submarine Pipeline
Jie Dong,
Jie Dong
Hefei General Machinery Research Institute, Hefei, China
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Chen Xuedong,
Chen Xuedong
Hefei General Machinery Research Institute, Hefei, China
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Bing Wang,
Bing Wang
Hefei General Machinery Research Institute, Hefei, China
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Weihe Guan,
Weihe Guan
Hefei General Machinery Research Institute, Hefei, China
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Tiecheng Yang,
Tiecheng Yang
Hefei General Machinery Research Institute, Hefei, China
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Fan Zhichao
Fan Zhichao
Hefei General Machinery Research Institute, Hefei, China
Search for other works by this author on:
Jie Dong
Hefei General Machinery Research Institute, Hefei, China
Chen Xuedong
Hefei General Machinery Research Institute, Hefei, China
Bing Wang
Hefei General Machinery Research Institute, Hefei, China
Weihe Guan
Hefei General Machinery Research Institute, Hefei, China
Tiecheng Yang
Hefei General Machinery Research Institute, Hefei, China
Fan Zhichao
Hefei General Machinery Research Institute, Hefei, China
Paper No:
PVP2015-45356, V007T07A017; 6 pages
Published Online:
November 19, 2015
Citation
Dong, J, Xuedong, C, Wang, B, Guan, W, Yang, T, & Zhichao, F. "The Effect of Soil on the Structural Response and Fatigue Life of Free Span for Submarine Pipeline." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 7: Operations, Applications and Components. Boston, Massachusetts, USA. July 19–23, 2015. V007T07A017. ASME. https://doi.org/10.1115/PVP2015-45356
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