Automatic static load testing for piles

E - Fixed Constructions – 02 – D

Patent

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Details

E02D 33/00 (2006.01) G01L 5/00 (2006.01) G01M 5/00 (2006.01) G01N 3/08 (2006.01)

Patent

CA 2283807

There is disclosed a method and apparatus for testing the static load-bearing capacity of a pile, wherein a test load is applied to the top of the pile (2) by way of a jack (1) braced against a reaction member (3) and the magnitude of the test load and the resulting displacement of the pile are measured and communicated to an electronic computer (7). The electronic computer (7) issues control signals to the jack (1) in response to the measured magnitude of the test load so as to apply a predetermined regime of test loads to the top of the pile (2). By automatically monitoring the applied test load, it is possible to maintain a desired load with a high level of accuracy for an extended period of time without the need for operator intervention.

L'invention concerne un procédé et un dispositif d'essai statique de la portance d'un pieu, ce procédé consistant à appliquer une charge d'essai sur le sommet d'un pieu (2) au moyen d'un vérin (1) étrésillonné contre un élément de réaction (3), à mesurer l'ampleur de la charge d'essai et le déplacement résultant du pieu et à communiquer ces éléments à un calculateur électronique (7). Ce dernier (7) produit des signaux de commande en direction du vérin (1) en réponse à l'amplitude mesurée de la charge d'essai, afin que soit appliqué un régime déterminé de charges d'essai sur le sommet du pieu (2). En surveillant de façon automatique la charge d'essai appliquée, il est possible de conserver une charge voulue avec un degré élevé de précision, pendant une période prolongée, sans intervention d'un opérateur.

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