Ribbed flexible member for casting into an anchorage medium

Details Ribbed flexible member for casting into an anchorage medium Ribbed flexible member for casting into an anchorage medium

E - Fixed Constructions

21

D

E21D 21/00 (2006.01)

Patent

CA 2147182

Parts of the exposed surfaces of a plurality of the helically extending outer wires of a strand, e.g. for use as a roof bolt, are upset in a substantially non-axial direction. The upset parts or indentations enhance keying to the anchoring medium and resist the tendency of the strand to screw out of the anchoring medium, in use.

Les parties (6) des surfaces exposées d'une pluralité de fils externes (4) disposés en spirales d'un toron (1) utilisé, par exemple comme cheville d'ancrage, sont renversées dans une direction sensiblement non axiale. Les parties renversées ou entailles (6) renforcent le calage dans le milieu d'ancrage et s'opposent à la tendance du toron (1) à se dévisser hors dudit milieu, lors de son utilisation.

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