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- Title
Behavior of rigid blocks with geometrical defects under seismic motion: an experimental and numerical study.
- Authors
Mathey, Charlie; Feau, Cyril; Politopoulos, Ioannis; Clair, David; Baillet, Laurent; Fogli, Michel
- 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. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
EARTHQUAKE zones; EARTHQUAKE engineering; STRUCTURAL dynamics; NUMERICAL analysis; PROBABILITY theory
- Publication
Earthquake Engineering & Structural Dynamics, 2016, Vol 45, Issue 15, p2455
- ISSN
0098-8847
- Publication type
Article
- DOI
10.1002/eqe.2773