G - Physics
01
R
G01R 15/20 (2006.01)
Patent
CA 2710243
An insert for embedment in a concrete component during casting, having a tubular cavity for receiving a threaded anchorage member, the tubular cavity having an opening arranged to face outward of the concrete component when cast for insertion of the threaded anchorage member, wherein the insert is externally tapered such that, when the insert is embedded in the concrete component and the anchorage member is threadedly engaged within the tubular cavity, axial loading applied to the anchorage member in a sense to withdraw the anchorage member from the insert causes reactional force from the surrounding concrete to be applied to the insert in a direction radially inwardly of the insert, and wherein the insert is formed of deformable plastic material such that said reactional force in turn causes the insert to exert force radially inwardly upon the anchorage member.
L'invention porte sur un insert, encastrable dans un composant de ciment lors de la coulée, comportant une cavité tubulaire destinée à recevoir un élément d'ancrage tubulaire, ladite cavité présentant une ouverture tournée vers l'extérieur du composant de ciment lors du moulage où vient se fixer l'élément d'ancrage tubulaire fileté. L'insert est effilé vers l'extérieur, ainsi, quand il est encastré dans le composant de ciment l'élément d'ancrage étant vissé dans la cavité tubulaire, une charge axiale tendant à extraire l'élément d'ancrage de l'insert produit une force radiale dirigée vers le centre de l'insert due au ciment l'entourant. Si l'insert est fait d'un matériau plastique déformable, ladite force de réaction amène à son tour l'insert à exercer une force radiale dirigée vers l'intérieur sur l'élément d'ancrage.
Casne Verige Pty Ltd
Dimock Stratton Llp
LandOfFree
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