Seismic wave simulation apparatus

G - Physics – 01 – V

Patent

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Details

G01V 1/145 (2006.01) G01M 7/08 (2006.01) G01N 3/30 (2006.01) G01N 3/00 (2006.01) G01N 3/02 (2006.01)

Patent

CA 2274698

Seismic wave simulation apparatus (1) includes an elastic energy accumulator (4) shaped to induce a simulated seismic wave of known form in a geological specimen (2) in which is embedded the foundation (3) of a building. A hydraulic actuator (5) is used to preload the accumulator (4) in a direction reverse to arrow A and an explosive bolt (6) is exploded, thereby releasing the energy of the accumulator (4) as a seismic wave through the geological specimen (2). The specimen (2) is provided with transducer bars (8) and an electrified metallic thin sheet (9) connected to a Wheastone bridge in order to obtain various measurements.

L'invention concerne un appareil de simulation d'ondes séismiques (1). Cet appareil comprend un accumulateur d'énergie élastique (4) dont la forme permet d'induire une onde séismique simulée, de forme connue, dans une éprouvette géologique (2) supportant les fondations (3) d'un bâtiment. Un organe de commande hydraulique (5) permet de précontraindre l'accumulateur (4) dans un sens opposé à la flèche (A). On fait détonner un boulon destructible (6), ce qui libère l'énergie de l'accumulateur (4) sous forme d'une onde séismique dans l'éprouvette géologique (2). Cette dernière est pourvue de barres de transducteur (8) et d'une feuille mince (9) métallique électrifiée, connectée à un pont de Wheatstone afin d'effectuer diverses mesures.

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