基于耦合模型的椭圆型沉箱基础水动力分析  

Hydrodynamic Analysis of Ellipse Caisson Foundation Based on the Coupled Numerical Model

作　　者：王海龙[1] 高东博[2] 张鹏辉 WANG Hailong GAO Dongbo ZHANG Penghui(Offshore Oil Engineering Co.,Ltd,Tianjin 300451,China CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,Guangdong Province,China Tianjin Tianbao Asset Management Company,Tianjin 300308,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451 [2]中交第四航务工程勘察设计院有限公司,广东广州510230 [3]天津天保资产经营管理有限公司,天津300308

出　　处：《天津科技》2017年第5期70-73,共4页Tianjin Science & Technology

摘　　要：椭圆型沉箱是一种新型的重力墩式码头结构形式,其水动力特性一直是目前研究的热点问题。建立了适用于椭圆沉箱的波浪时域耦合模型以及模拟椭圆型沉箱的水动力特性,该模型有外域与内域之分,外域采用三维Boussinesq方程,该方程的求解基于有限差分法,内域采用二维Laplace方程,该方程的求解基于有限元法,将两者在交界面处进行匹配。耦合数值计算结果与模型实验结果对比可看出,两者之间吻合度良好,验证了该耦合模型的精度,也为下一步的工作奠定了基础。The hydrodynamic analysis of ellipse caisson foundationwhich is a new structure of the gravity pier has become a hot spot. A nonlinear time-domain coupled numerical model was developed in the present study to calculate the nonlinear wave pressure acting on an ellipse caisson foundation. The whole domain is divided into an inner and an outer domain re-spectively. The inner domain was governed by the Laplace equations which were established by a finite difference method. The outer domain was governed by Boussinesq equations which were established by a finite element method. Matching couple conditions were applied to the interface boundaries. The comparison between the numerical results and the experimental data showed a good agreement,which is particularly useful for the computation of the wave acting on the ellipse caisson foundation.

关 键 词：椭圆沉箱基础 耦合模型 BOUSSINESQ方程 LAPLACE方程 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]