Double-sheathed structural cable

Abstract

The structural cable comprises a bundle of load-bearing tendons extending between upper and lower anchoring devices, a first sheath containing the bundle of tendons, and a second sheath arranged around the first sheath, with a gap between the first and second sheaths.

1 - 7 . (canceled) 
     
     
         8 . A structural cable of a construction work, the structural cable comprising:
 a bundle of load-bearing tendons extending between upper and lower anchoring devices, the outer sheath being made of at least one segment having a cross-section formed of an integral piece of tube;   an outer sheath containing the bundle of tendons; and   light sources arranged within a cross-sectional profile of the outer sheath so as to radiate light out of the structural cable.   
     
     
         9 . The structural cable as claimed in  claim 8 , wherein the sheath extends over more than 80% of a length of the bundle of tendons between the upper and lower anchoring devices. 
     
     
         10 . The structural cable as claimed in  claim 8 , further comprising an inner sheath concentrically arranged with the outer sheath, wherein the bundle of tendons is inside the inner sheath, wherein the outer sheath is at least in part light-transmissive, and wherein the light sources are arranged in a gap between the inner and outer sheaths. 
     
     
         11 . The structural cable as claimed in  claim 10 , wherein the outer sheath is configured to transmit substantially no longitudinal effort to the inner sheath. 
     
     
         12 . The structural cable as claimed in  claim 10 , further comprising at least one rope extending along the bundle of tendons in the gap between the inner and outer sheaths, wherein the outer sheath is attached to the at least one rope. 
     
     
         13 . The structural cable as claimed in  claim 12 , wherein the outer sheath comprises a plurality of segments assembled along the bundle of tendons, each segment being connected to the at least one rope. 
     
     
         14 . The structural cable as claimed in  claim 13 , wherein each segment of the outer sheath is configured to transmit substantially no longitudinal effort to an adjacent segment of the outer sheath. 
     
     
         15 . The structural cable as claimed in  claim 13 , further comprising a joint member disposed between an upper end of a first segment of the second sheath and a lower end of a second segment of the second sheath adjacent to the first segment, wherein the joint member is configured to accommodate a longitudinal displacement of the upper end of the first segment relatively to the lower of the second segment. 
     
     
         16 . The structural cable as claimed in  claim 8 , wherein the outer sheath has transparent portions where the light sources are disposed. 
     
     
         17 . The structural cable as claimed in  claim 8 , wherein the profile of the outer sheath has a circular cross-section. 
     
     
         18 . The structural cable as claimed in  claim 8 , wherein the outer sheath is provided with a surface structure to improve a behavior of the structural cable in the presence of a combined action of rain and wind.