Equivalent linear substructure approximation of soil–foundation–structure interaction: model presentation and validation

Abstract

An equivalent linear substructure approximation of the soil-foundation-structure interaction is proposed in this paper. Based on the inherent linearity of the approach, the solution of the structural and the soil domain is obtained simultaneously, incorporating the effects of the primary and secondary soil nonlinearities. The proposed approximation is established theoretically and then validated against centrifuge benchmark soil-foundation-structure interaction tests. The equivalent linear substructure approximation is proved to simulate efficiently the effects of the nonlinear soil behavior on the soil-foundation-structure system under a strong earthquake ground motion.

Dynamic response of flexible square tunnels: centrifuge testing and validation of existing design methodologies

“…It is noteworthy that this high decrease of the soil stiffness and increase of damping in this type of test is also reported by other researchers (Kirtas et al, 2009;Pitilakis and Clouteau, 2010;Lanzano et al, 2010;Conti et al, 2013;Li et al, 2013).…”

Dynamic Soil-Structure Analysis of Tower-Like Structures Using Spectral Elements

“…The results, obtained through numerical analyses, were compared with results of experiments carried out in a geotechnical centrifuge, as well as on a shaking table. The assumption on massless foundation was used in earlier studies ( [23][24][25][26]), also. Nevertheless, it is clear from Eq.…”

Dynamics of structures coupled with elastic media—A review of numerical models and methods

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