Wire made of high strength steel, particularly for protecting nets for geotechnical use

Abstract

A wire for geotechnical use is described, for making protecting nets, made of high strength steel. The wire is at least partially shaped in a waveform and has a plurality of crests and valleys arranged alternately one to another. A protecting net is also described, usable in the geotechnical field, having a wire at least partially shaped in a waveform for making the mesh, and/or as a reinforcing element of the net. An anchoring device, a guywire and an energy dissipating device are also described, each having a plurality of wires at least partially shaped in a waveform.

1 . Wire for geotechnical use, particularly for making protecting nets, said wire being made of high strength steel and wherein it is at least partially shaped in a waveform and comprising a plurality of crests and valleys arranged alternately one to another. 
     
     
         2 . Wire according to  claim 1 , wherein it is shaped in a waveform in all its length. 
     
     
         3 . Wire according to  claim 1 , wherein said waveform is unchanged along the wire extent. 
     
     
         4 . Wire according to  claim 1 , wherein it has a breaking strength comprised of between 1000 MPa and 2400 MPa. 
     
     
         5 . Wire according to  claim 1 , wherein is has an elongation at break, when said wire is not shaped in a waveform, equal to or greater than 2%. 
     
     
         6 . Wire according to  claim 1 , wherein it has a circular section (S). 
     
     
         7 . Wire according to  claim 1 , wherein the diameter (D) of said circular section (S), or the diameter of the circumference circumscribable to the non-circular section (S) of the wire, is between 1.5 mm and 6 mm limits included. 
     
     
         8 . Wire according to  claim 1 , wherein the wavelength (λ) between two successive crests and/or between two successive valleys and the wave amplitude (y) between a crest and a valley are selected so that the wire length before it is shaped is equal to, or greater than, 3% of the length of the wire shaped in a waveform. 
     
     
         9 . Wire according to  claim 1 , wherein the wavelength (λ) between two successive crests and/or two successive valley is between 9 mm and 40 mm. 
     
     
         10 . Wire according to  claim 1 , wherein the wave amplitude (y) between a crest and a valley is between 2.6 mm and 12 mm. 
     
     
         11 . Wire according to  claim 1 , wherein it is at least partially shaped in a waveform for at least 30% of its own length. 
     
     
         12 . Wire according to  claim 1 , wherein said plurality of crests and valleys is contained in a plane. 
     
     
         13 . Cable comprising two or more wires at least partially shaped in a waveform according to  claim 1 , wherein said wires are twisted, stranded or coiled, before or after said wires have been partially shaped in a waveform. 
     
     
         14 . Protecting net for geotechnical use comprising a plurality of wires forming the mesh of said net, wherein at least 50%, of said wires forming the mesh of said net are wires made of high strength steel and at least partially shaped in a waveform according to  claim 1 . 
     
     
         15 . Net according to  claim 14 , wherein said wires form a single mesh, or a double twist mesh, or a plurality of rings which are linked, or constrained, or connected one to another, to form the mesh of said net. 
     
     
         16 . Protecting net for geotechnical use comprising a plurality of wires forming the mesh of said net, further comprising at least one more reinforcing wire, said at least one reinforcing wire being a wire made of high strength steel and at least partially shaped in a waveform according to  claim 1 . 
     
     
         17 . Anchoring device for geotechnical use comprising two or more wires at least partially shaped in a waveform according to  claim 1 . 
     
     
         18 . Anchoring device according to  claim 17 , wherein said wires are bent substantially in a “U” shape thereby forming an eyelet and two branches of said wires. 
     
     
         19 . Anchoring device according to  claim 17 , further comprising at least one thimble. 
     
     
         20 . Anchoring device according to  claim 17 , further comprising at least one tubular element in which the plurality of wires is inserted. 
     
     
         21 . Guywire for geotechnical use comprising two or more wires at least partially shaped in a waveform according to  claim 1 . 
     
     
         22 . Guywire according to  claim 21 , wherein the ends of said wires are constrained one another by means of at least one end connector. 
     
     
         23 . Energy dissipating device for geotechnical use comprising two or more wires at least partially shaped in a waveform according to  claim 1 . 
     
     
         24 . Energy dissipating device according to  claim 23 , wherein said wires form a closed line. 
     
     
         25 . Energy dissipating device according to  claim 23 , wherein said wires form a substantially circular, or substantially oval, or substantially elongated closed line.