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Seismic Dynamics of Pipeline Buried in Dense Seabed Foundation

School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
University of Chinese Academy of Sciences, Beijing 100049, China
Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2019, 7(6), 190;
Received: 1 February 2019 / Revised: 12 June 2019 / Accepted: 12 June 2019 / Published: 20 June 2019
(This article belongs to the Special Issue Coastal Geohazard and Offshore Geotechnics)
PDF [4870 KB, uploaded 27 June 2019]


Submarine pipeline is a type of important infrastructure in petroleum industry used for transporting crude oil or natural gas. However, submarine pipelines constructed in high seismic intensity zones are vulnerable of attacks from seismic waves. It is important and meaningful in engineering design to comprehensively understand the seismic wave-induced dynamics characteristics of submarine pipelines. In this study, taking the coupled numerical model FSSI-CAS 2D as the tool, the seismic dynamics of a submarine steel pipeline buried in dense soil is investigated. Computational results indicate that submarine pipeline buried in dense seabed soil strongly responds to seismic wave. The peak acceleration could be double of that of input seismic wave. There is no residual pore pressure in the dense seabed. Significant resonance of the pipeline is observed in horizontal direction. Comparative study shows that the lateral boundary condition which can avoid wave reflection on it, such as laminar boundary and absorbing boundary should be used for seabed foundation domain in computation. Finally, it is proven that the coupled numerical model FSSI-CAS 2D is applicable to evaluate the seismic dynamics of submarine pipeline. View Full-Text
Keywords: submarine pipeline; dense seabed foundation; seismic dynamics; resonance of submarine pipeline; FSSI-CAS 2D submarine pipeline; dense seabed foundation; seismic dynamics; resonance of submarine pipeline; FSSI-CAS 2D

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Zhang, Y.; Ye, J.; He, K.; Chen, S. Seismic Dynamics of Pipeline Buried in Dense Seabed Foundation. J. Mar. Sci. Eng. 2019, 7, 190.

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