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Journal Articles unknown Year : 2016

Behavior of rigid blocks with geometrical defects under seismic motion: an experimental and numerical study

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Abstract

the present work investigates the influence of small geometrical defects on the behavior of slender rigid blocks. A comprehensive experimental campaign was carried out on one of the shake tables of CEA/Saclay in France. The tested model was a massive steel block with standard manufacturing quality. Release, free oscillations tests as well as shake table tests revealed a non‐negligible out‐of‐plane motion even in the case of apparently plane initial conditions or excitations. This motion exhibits a highly reproducible part for a short duration that was used to calibrate a numerical geometrically asymmetrical model. The stability of this model when subjected to 2000 artificial seismic horizontal bidirectional signals was compared with the stability of a symmetrical one. This study showed that the geometrical imperfections slightly increase the rocking and overturning probabilities for earthquake signals in a narrow range of peak ground acceleration.

Dates and versions

cea-02382950 , version 1 (27-11-2019)

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Cite

Charlie Mathey, Cyril Feau, Ioannis Politopoulos, David Clair, Laurent Baillet, et al.. Behavior of rigid blocks with geometrical defects under seismic motion: an experimental and numerical study. unknown, 2016, 45 (15), pp.2455-2474. ⟨10.1002/eqe.2773⟩. ⟨cea-02382950⟩
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