Method and device for performing ground anchorage

Details Method and device for performing ground anchorage Method and device for performing ground anchorage

E - Fixed Constructions

02

D

E02D 5/80 (2006.01)

Patent

CA 2218100

Method and arrangement for anchorage in the soil by means of a ground anchor (1) in the form of a tube (2) in which at least two axial slots (3a, 3b) are arranged along at least one region of a tube wall in a part of the tube which is to be driven into the soil. This tube (2) is driven into the soil by cooperating with a pike (4) which is arranged in the tube (2) and which, after the tube has been driven in, is removed therefrom. The method according to the invention is characterized in that the tube (2) in at least one region with axial slots (3a, 3b) is subjected to a radial load by means of a tool (5) which is sunk into the tube and which is actuated so as to exert a controllable radial load on the interior of the tube in the direction towards the tube wall. By virtue of this load a controllable expansion of the tube is brought about in this region. The tool is removed from the tube when a predetermined degree of expansion has been attained.

La présente invention concerne une technique et un dispositif pour effectuer un ancrage au sol à l'aide d'un tirant d'ancrage (1) tubulaire (2) présentant dans une région au moins de sa paroi deux fentes axiales (3a, 3b) au minimum, dans la partie du tube qui doit être enfoncée dans le sol. L'enfoncement du tube (2) se fait en utilisant un pieu (4) disposé à l'intérieur (2) et que l'on retire une fois l'opération terminée. La technique selon l'invention consiste à soumettre le tube (2) d'au moins une région dotée de fentes axiales (3a, 3b) à une charge radiale à l'aide d'un outil (5) que l'on introduit dans le tube et que l'on actionne de manière à exercer contre la paroi intérieure du tube une charge radiale contrôlée. Cette charge provoque une expansion contrôlée dans la région en question. L'outil est ensuite retiré du tube dès qu'un degré d'expansion préétabli a été atteint.

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