Three‐dimensional hybrid modelling of soil‐structure interaction
Three‐dimensional hybrid modelling of soil‐structure interaction
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DOI：
10.1002/eqe.4290100106
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发表时间：
1982
影响因子：
4.5
通讯作者：
S. Gupta;J. Penzien;Tsung‐Wu Lin;C. Yeh
中科院分区：
文献类型：
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作者：
S. Gupta;J. Penzien;Tsung‐Wu Lin;C. Yeh
开发了一种用于分析动态条件下土壤-结构相互作用的三维混合模型，该模型利用了有限元和子结构方法的理想特征，并最大限度地减少了它们的不良特征。该建模是通过将整个土壤结构系统划分为具有半球形界面的近场和远场来实现的。近场由待分析的结构及其周围的有限土壤区域组成，通过有限元进行建模。半无限远场通过界面处的分布阻抗函数进行建模，该函数由系统辨识方法确定。数值结果表明，所提出的模型使得对表面和嵌入式结构的三维土壤-结构相互作用进行现实且经济的评估成为可能。
A three-dimensional hybrid model for the analysis of soil-structure interaction under dynamic conditions is developed which takes advantage of the desirable features of the finite element and substructure methods and which minimizes their undesirable features. The modelling is achieved by partitioning the total soil-structure system into a near-field and a far-field with a hemispherical interface. The near-field, which consists of the structure to be analysed and a finite region of soil around it, is modelled by finite elements. The semi-infinite far-field is modelled by distributed impedance functions at the interface which are determined by system identification methods. Numerical results indicate that the proposed model makes possible realistic and economical assessment of three-dimensional soil-structure interaction for both surface and embedded structures.