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A coupling model of FE–BE–IE–IBE for non‐linear layered soil–structure interactions
Author(s) -
Chuhan Zhang,
Xinfeng Chen,
Guanglun Wang
Publication year - 1999
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/(sici)1096-9845(199904)28:4<421::aid-eqe824>3.0.co;2-j
Subject(s) - discretization , coupling (piping) , half space , nonlinear system , boundary (topology) , field (mathematics) , displacement (psychology) , soil structure interaction , geotechnical engineering , geology , modulus , boundary value problem , geometry , structural engineering , finite element method , mechanics , mathematics , mathematical analysis , engineering , physics , mechanical engineering , psychology , quantum mechanics , psychotherapist , pure mathematics
A coupling model of Finite Elements (FEs), Boundary Elements (BEs), Infinite Elements (IEs) and Infinite Boundary Elements (IBEs) is presented for analysis of soil–structure interaction (SSI). The radiation effects of the infinite layered soil are taken into account by FE–IE coupling, while the underlying bed rock half‐space is discretized into BE–IBE coupling whereby the non‐horizontal bed rock surface can be accounted for. Displacement compatabilities are satisfied for all types of aforementioned elements. The equivalent linear approach is employed for approximation of nonlinearity of the near field soil. This model has some advantages over the current SSI program in considering the bed rock half‐space and non‐vertical wave incidence from the far field. Examples of verification demonstrate the applicability and accuracy of the method when compared with the FLUSH program. Finally, the effects of the relative modulus ratio E r / E s of rock and soil and the incident angles of non‐vertical waves on the responses of the structure and the soil are examined. Copyright © 1999 John Wiley & Sons, Ltd.