Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface

Paru dans le dernier numéro de la revue Buildings, l’article « Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface » (collaboration 3SR / AE&CC) explique les étapes de préparation et d’exécution de tests sur table vibrante sur trois bâtiments à échelle réduite. En raison du nombre limité d’installations disponibles pour effectuer de tels tests et de leur coût élevé, cet article présent un intérêt pour les équipes de recherche qui souhaitent accroître l’efficacité de la réalisation de ces tests et surmonter les limites de temps et de budget.
La solution présentée, ne nécessitant pas l’utilisation d’une grue ou d’autres machines hydrauliques pour le déplacement des échantillons, pourrait également permettre le test d’échantillons vieillis et étant sensibles aux manipulations.

Résumé complet de l’article

The shake table test is one of the preferred techniques used to understand the dynamic response of a structure. However, due to the limited number of facilities available to perform such tests and their expensiveness, researchers often must rely on numerical models validated with the results of the static tests only. Moreover, most research papers concerning shake table tests lack details on how the tests were planned and executed. This paper explains the steps used for the preparation and execution of shake table tests on three reduced-scale buildings. These buildings were constructed outside the shake table surface, on a metallic base frame, and later moved to the shake table used for the tests in order to optimize the time of the experimental campaign. This approach enabled us to complete the tests in only 6 days. The approach presented in this paper may be helpful to researchers who want to increase the effectiveness of the available shake table facility and overcome the limitations of time and budget. Moreover, the solution presented in this article helps in the displacement of specimens without the use of a crane or other sophisticated hydraulic machinery. Thus, it could also be useful for testing specimens that have been aged and that are sensitive to displacements.

Keywords: dynamic test; experimental setup; shake table; building test; masonry structure; specimen displacement

Télécharger l’article : https://mdpi-res.com/d_attachment/buildings/buildings-12-00319/article_deploy/buildings-12-00319-v2.pdf