REINFORCED CABLE AND METHOD FOR MANUFACTURING SAME

The invention can be used in the production of a pretensioned and embedded wire cable reinforcement. The reinforced cable consists of a central wire (1) and, arranged spirally around the latter, entwined wires (2) of an internal layer and entwined wires (4) of an external layer, each of which wires has a surface section which is part of the external surface of the cable. The distance between the surfaces of the entwined wires of the external layer (4) is a minimum of half of the radial sectional size thereof, wherein spiral faces (5) which are continuous in length are formed on surface sections, which face one another, of adjacent wires, and the surface section of each of the entwined wires of the external layer (4), which section is part of the external surface of the cable, has at least one compressed part (6) which is continuous along the entire length of the above-mentioned wires. A method for manufacturing such a cable is also presented, the method consisting of stages in which wires of circular section are manufactured, the wires are twisted with the aid of a wire cable closing machine with a rotating rotor, plastic compression of the twisted cable is carried out by deformation of the entwined wires in at least one gauge roller rotating relative to the axis of the cable, and the compressed cable is subjected to thermo-mechanical treatment. The durability of a cable is substantially increased, while simultaneously ensuring high adhesion to concrete in the longitudinal direction and in the screwing-in direction. L'invention peut être utilisée dans la production d'une armature de câble précontrainte et de fondation. Ce câble pour armature comprend un brin central (1), ainsi que des brins torsadés de couche interne (2) et des brins torsadés de couche externe (4) disposés en spirale autour de celui-ci, chacun des brins possédant une section de surface qui représente une partie de la surface externe du câble. La distance entre les surfaces des câbles torsadés de la couche externe (4) représente au moins la moitié de leur dimension en coupe radiale et, sur les sections orientées l'une vers l'autre de la surface de brins voisins sont formées des faces spirales continue sur leur longueur (5), et une section de la surface de chacun des fils torsadés de couche externe (4), qui représente une partie de la surface externe du câble, comprend au moins une partie comprimée (6) et continue sur toute la longueur des brins. L'invention concerne également un procédé de