RESEARCH ARTICLE


Numerical Modeling of Seismic-induced Soil Response Around Submarine Pipeline



X. L. Zhang*, 1, D. S. Jeng2
1 The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Tech-nology, Beijing 100124, China
2 Division of Civil Engineering, University of Dundee, Dundee, DD1 4HN, UK


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Creative Commons License
© 2012 Zhang and Jeng;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Univer-sity of Technology, Beijing 100124, China; Tel.: +86(15210581913); Fax: +86-10-67392461; E-mail: zhangxiaoling31@163.com


Abstract

Seismic-induced pore pressure and effective stresses in the saturated porous seabed under seismic loading are the main factors that govern the overall stability of submarine pipelines. In most of the previous investigations for the seismic-induced dynamic response around a submarine pipeline have 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 numerical model presented, the effects of pipeline geometry and soil characteristics on the seismic-induced pore pressure of the seabed and internal stresses of submarine pipeline will be discussed in detail.

Keywords: Submarine pipeline, dynamic response, excess pore pressure, internal stresses, seismic loading.