A Coupled Model for an Offshore Pile, Seabed and Seawater Interaction

4区地球科学 Q3 Earth and Planetary Sciences

Journal of Coastal Research Pub Date : 2024-03-29 DOI:10.2112/jcr-si50-076.1

Jian-Fei Lu, D. Jeng

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引用次数: 4

Abstract

LU, J.-F. AND JENG, D.-S., 2007. A coupled model for an offshore pile, seabed and seawater interaction. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 389 – 393. Gold Coast, Australia, ISSN 0749.0208 A coupled model is developed to investigate the dynamic interaction between an offshore pile, poroelastic seabed and sea water. The pile and the seabed are treated as saturated porous media described by Biot’s dynamic theory. The sea water is regarded as an acoustic medium which is characterised by the Helmholtz equation. Three boundary element formulations are constructed for the pile, the seabed and the sea water, respectively. The three boundary element method formulations and the continuity conditions (stress and displacement) between the pile, the seabed and the sea water are used to formulate the coupled model for the system. Airy linear wave theory is used to evaluate the external force applied on the pile and the seabed due to the incident and the scattered water waves. The dynamic response of the system is calculated by the coupled boundary element method formulation. A numerical example is used to demonstrate the capacity of the coupled model.

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近海桩基、海床和海水相互作用耦合模型

LU, J.-F.and JENG, D.-S., 2007.A coupled model for an offshore pile, seabed and seawater interaction.Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 389 - 393.澳大利亚黄金海岸，ISSN 0749.0208 建立了一个耦合模型来研究近海桩、多孔弹性海床和海水之间的动态相互作用。桩和海床被视为饱和多孔介质，由 Biot 动力理论描述。海水被视为声学介质，由亥姆霍兹方程描述。分别针对桩体、海床和海水构建了三种边界元计算方法。利用这三种边界元法公式以及桩体、海床和海水之间的连续性条件（应力和位移）来建立系统的耦合模型。空气线性波理论用于评估入射波和散射水波对桩体和海床施加的外力。通过耦合边界元法计算系统的动态响应。通过一个数值示例展示了耦合模型的能力。

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来源期刊

Journal of Coastal Research 地学-地球科学综合

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： The Journal of Coastal Research (JCR) is one of the leading international journals for coastal studies and processes, and is published bi-monthly by the Coastal Education & Research Foundation [CERF]. By covering the entire field of coastal research, the JCR encompasses all subjects relevant to natural and engineered environments (freshwater, brackish, or marine) and the protection/management of their resources in the vicinity of coastlines of the world. Even though the journal broadly focuses on immediate shoreline zones, the JCR also embraces those coastal environments that either reach some indefinite distance inland or that extend seaward beyond the outer margins of the sublittoral (neritic) zone. The JCR disseminates accurate information to both the public and research specialists around the world on all aspects of coastal issues in an effort to maintain or improve the quality of our planet''s shoreline resources.