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Verification of two‐dimensional non‐linear analysis of sand‐structure system by examining the results of the shaking‐table test
Author(s) -
Ohtsuki Akira,
Hirota Masanori,
Ishimura Kikuo,
Yokoyama Kazutomo,
Fukutake Kiyoshi
Publication year - 1992
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/eqe.4290210703
Subject(s) - earthquake shaking table , dilatant , geotechnical engineering , nonlinear system , geology , linear model , ground motion , linear elasticity , shear (geology) , structural engineering , mathematics , engineering , physics , finite element method , statistics , quantum mechanics , petrology
The verification of a two‐dimensional non‐linear analysis based on a hybrid constitutive model, which consists of the Ramberg‐Osgood model extended to two‐dimensional problems and a dilatancy model, is discussed through a comparison of the shaking‐table test results for a one‐storey structure standing on a dry sandy deposit with those for the same on a saturated sandy deposit. Since the relationships G vs. γ and h vs. γ for shear strains of 10 −5 −10 −3 can be obtained accurately by an inversion analysis of the resonance curve of the sandy deposit the proposed non‐linear method can represent well the observed non‐linear response of the dry or the saturated sandy deposit including the structure. This method, however, should be applied carefully to assess the response of a soil‐structure system when the three‐dimensional interaction affects significantly the response of the model. An equivalent linear analysis using a sway‐rocking model is applied to simulate the non‐linear ground motion including the three‐dimensional interaction, and it is found that the sway‐rocking model can also represent well the non‐linear response of the system.