Numerical Analysis of Seismic Dynamic Response of Saturated Porous Seabed Around a Buried Pipeline |
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| Authors: | X L Zhang Y Han |
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| Institution: | 1. The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education , Beijing University of Technology , Beijing , China zhangxiaoling31@163.com;3. Institute of Geographic Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing , China |
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| Abstract: | The stability of submarine pipelines has been extensively studied by coastal engineers in recent years. Seismic-induced pore pressure and effective stresses in the saturated porous seabed and pipeline are the main important factors in the analysis of foundation stability around submarine pipelines. The majority research of the seismic-induced dynamic response around an offshore pipeline has been limited to two-dimension cases. In this paper, a three-dimensional finite element model including buried pipeline is established by extending DYNE3WAC. Based on the proposed numerical model, a parametric study is conducted to examine the effects of soil characteristics and pipeline configurations on the seismic-induced soil response around offshore pipelines. |
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| Keywords: | excess pore water pressure internal stress seismic loading submarine pipeline |
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