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A stepwise damping‐solvent extraction method for large‐scale dynamic soil–structure interaction analysis in time domain
Author(s) -
Li J. B.,
Yang J.,
Lin G.
Publication year - 2008
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/nag.631
Subject(s) - substructure , soil structure interaction , time domain , scale (ratio) , displacement (psychology) , acceleration , extraction (chemistry) , crest , domain (mathematical analysis) , rigid body , structural engineering , geotechnical engineering , computer science , mathematics , geology , engineering , mathematical analysis , finite element method , physics , chemistry , classical mechanics , psychology , quantum mechanics , chromatography , computer vision , psychotherapist
Time‐domain analysis of dynamic soil–structure interaction based on the substructure method plays an increasing role in practical applications as compared with the frequency‐domain analysis. Efficient and accurate modelling of the unbounded soil or rock medium has been a key issue in such an analysis. This paper presents a subregional stepwise damping‐solvent extraction formulation for solving large‐scale dynamic soil–structure problems in the time domain. Accuracy and efficiency of the formulation are evaluated in detail for a classical problem involving a rigid strip foundation embedded in a half‐space. A practical large‐scale soil–structure interaction problem, which represents a high concrete gravity dam subjected to seismic load, is thenanalysed using the proposed method. Various responses of the dam, including time histories of the crest displacement and acceleration and contours of the peak principal stresses within the dam body, are presented. Comparisons are also made between these results with those obtained using other models for the unbounded medium. Copyright © 2007 John Wiley & Sons, Ltd.