Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6740181 | Engineering Structures | 2015 | 14 Pages |
Abstract
The paper reports the main findings of a series of shaking table tests on a 3-story ¼-scale reinforced concrete model characterized by strong asymmetry, representative of a nuclear building. The specimen was subjected to 13 bi-directional input ground motions with increasing maximum acceleration from 0.05 to 1.0 g, which induced significant torsion and a nonlinear response. The tests were conducted on the AZALEE shaking table (Saclay, France) as part of a wide research program launched by the French Atomic Energy and Sustainable Energies Commission (CEA), Electricité De France (EDF) and the International Atomic Energy Agency (IAEA), titled, “Seismic design and best-estimate Methods Assessment for Reinforced concrete buildings subjected to Torsion and nonlinear effect (SMART).” Based on the analysis of the test results, the following conclusions were drawn: (a) moderate damage occurred on the specimen (mainly close to the geometric singularities) as revealed by the crack patterns observed at the end of the seismic test sequence; (b) the model responded mainly in the torsional mode; (c) an important specimen stiffness reduction was observed with a shift of the first peak frequency almost equal to 50%; (d) the seismic margins assessment carried out with two distinct failure criteria (frequency shift and inter-story drift) showed an important specimen robustness for high seismic amplitude as well.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Benjamin Richard, Paolo Martinelli, François Voldoire, Mathieu Corus, Thierry Chaudat, Salim Abouri, Nicolas Bonfils,