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首页> 外文期刊>Ocean Engineering >Seismic water-structure interaction analysis using a modified SBFEM and FEM coupling in a frequency domain
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Seismic water-structure interaction analysis using a modified SBFEM and FEM coupling in a frequency domain

机译：使用改进的SBFEM和FEM耦合在频域中进行地震水-结构相互作用分析

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摘要

The seismic responses of offshore structures and dams can be affected by the water-structure interaction. The structures are commonly modelled by finite element method (FEM). If the infinite water layer is also modelled by FEM, then the computational costs are high. In this paper, an accurate and efficient substructure method is presented in a frequency domain for a 2D water-structure interaction analysis, in which the modified scaled boundary finite element method (SBFEM) is applied at a general shaped water-structure interface to replace the compressible water layer. Several numerical examples, including offshore structures and a typical-geometry gravity dam, are provided to demonstrate the computational efficiency and accuracy of the proposed substructure method. The effects of hydrodynamic pressure, water compressibility and structure geometry on the seismic responses of offshore structures are analysed based on the proposed method.
机译：水-结构相互作用会影响海上结构和大坝的地震响应。通常通过有限元方法（FEM）对结构进行建模。如果无限水层也通过FEM建模，则计算成本很高。在本文中，提出了一种精确有效的子结构方法，该方法在频域中用于二维水-结构相互作用分析。可压缩水层。提供了一些数值示例，包括海上结构和典型几何重力坝，以证明所提出的子结构方法的计算效率和准确性。在此基础上，分析了动水压力，水可压缩性和结构几何形状对海上结构地震响应的影响。

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