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A NON‐LINEAR SEISMIC RESPONSE ANALYSIS METHOD FOR SATURATED SOIL–STRUCTURE SYSTEM WITH ABSORBING BOUNDARY
Author(s) -
AKIYOSHI T.,
FANG H. L.,
FUCHIDA K.,
MATSUMOTO H.
Publication year - 1996
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/(sici)1096-9853(199605)20:5<307::aid-nag824>3.0.co;2-y
Subject(s) - biot number , constitutive equation , finite element method , earthquake shaking table , boundary (topology) , geotechnical engineering , boundary value problem , plane stress , geology , structural engineering , mathematics , mechanics , engineering , mathematical analysis , physics
A non‐linear seismic response analysis method for 2‐D saturated soil–structure system with an absorbing boundary is presented. According to the 3‐D strain space multimechanism model for the cyclic mobility of sandy soil, a constitutive expression for the plane strain condition is first given. Next, based on Biot's two‐phase mixture theory, the finite element equations of motion for a saturated soil–structure system with an absorbing boundary during earthquake loadings are derived. A simulation of the shaking table test is performed by applying the proposed constitutive model. The effectiveness of the absorbing boundary is examined for the 2‐D non‐linear finite element models subjected to random inputs. Finally, a numerical seismic response analysis for a typical saturated soil–structure system is performed as an application of the proposed method.