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Hybrid experiments on non‐linear earthquake‐induced soil‐structure interaction
Author(s) -
Toki Kenzo,
Sato Tadanobu,
Kiyono Junji,
Garmroudi Nozar Kishi,
Emi Susumu,
Yoshikawa Masaaki
Publication year - 1990
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.4290190507
Subject(s) - embedment , earthquake engineering , scaling , vibration , foundation (evidence) , amplitude , structural engineering , frequency domain , geotechnical engineering , forcing (mathematics) , earthquake shaking table , transformation (genetics) , soil structure interaction , dynamic testing , shallow foundation , geology , engineering , mathematics , physics , finite element method , acoustics , mathematical analysis , geometry , biochemistry , chemistry , archaeology , climatology , gene , bearing capacity , history , quantum mechanics
Non‐linear seismic soil‐structure interaction is studied through a hybrid procedure using the pseudo‐dynamic testing (PDT) method which is modified to take into account frequency dependence and developed for foundation‐soil systems. The numerical scheme used in conventional PDT is improved by introduction of a time‐dependent pseudo‐forcing function which is derived from frequency‐dependent dynamic characteristics of the system by means of Hilbert transformation in the frequency domain. Surface, shallow and caisson foundation models that differed in size and depth of embedment were used. The mechanical characteristics of the systems were determined from static and forced vibration dynamic tests. An amplitude scaling technique was used for three recorded accelerograms.