Coated PC steel stranded cable

A coated prestressed concrete (PC) steel stranded cable comprising:

• a stranded cable in which a plurality of elemental wires each composed of steel are twisted together;
• an anti-corrosive coating that coats an outer circumference of the stranded cable;
• and
• an optical fiber provided at a position corresponding to a strand groove in the stranded cable,
• the optical fiber being disposed at a triple point surrounded by a plurality of outer circumferential elemental wires and an inner circumferential elemental wire or central elemental wire, the plurality of outer circumferential elemental wires and the inner circumferential elemental wire or the central elemental wire constituting the stranded cable, the inner circumferential elemental wire or the central elemental wire being adjacent to the plurality of outer circumferential elemental wires, wherein the inner circumferential elemental wire or central elemental wire is located at a center in a radial direction of the coated PC steel stranded cable,
• each one of the plurality of outer circumferential elemental wires having a diameter smaller than a diameter of the inner circumferential elemental wire or the central elemental wire,
• the anti-corrosive coating having a filler portion provided between the elemental wires,
• the plurality of outer circumferential elemental wires comprising a first set of outer circumferential elemental wires, a space being formed between at least two adjacent outer circumferential elemental wires of the first set, the space being filled with the filler portion,
• the plurality of outer circumferential elemental wires comprising a second set, at least two adjacent outer circumferential elemental wires of the second set contact one another, and
• each of the outer circumferential elemental wire, the inner circumferential elemental wire, and the central elemental wire consists of a single strand.

A coated prestressed concrete (PC) steel stranded cable comprising:

• a stranded cable in which a plurality of elemental wires each composed of steel are twisted together;
• an anti-corrosive coating that coats an outer circumference of the stranded cable;
• an outer coating that coats an outer circumference of the anti-corrosive coating;
• and
• an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable,
• the anti-corrosive coating having a surface provided with a press-fit groove in which a portion of the optical fiber is press-fitted,
• the optical fiber being fixed by the anti-corrosive coating without using an adhesive agent,
• the stranded cable having a plurality of outer circumferential elemental wires constituting the outer circumference of the stranded cable, and an inner circumferential elemental wire or central elemental wire adjacent to the plurality of outer circumferential elemental wires, wherein the inner circumferential elemental wire or central elemental wire is located at a center in a radial direction of the coated PC steel stranded cable, and
• each of the outer circumferential elemental wire, the inner circumferential elemental wire, and the central elemental wire is single wire.

A coated prestressed concrete (PC) steel stranded cable comprising:

• a stranded cable in which a plurality of elemental wires each composed of steel are twisted together;
• an anti-corrosive coating that coats an outer circumference of the stranded cable;
• an outer coating that coats an outer circumference of the anti-corrosive coating;
• and
• an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable,
• the anti-corrosive coating having a surface provided with an irregularity for increasing frictional resistance with the optical fiber and the outer coating, and
• the irregularity being smaller than an irregularity formed by the strand groove,
• the stranded cable having a plurality of outer circumferential elemental wires constituting the outer circumference of the stranded cable, and an inner circumferential elemental wire or central elemental wire adjacent to the plurality of outer circumferential elemental wires, wherein the inner circumferential elemental wire or central elemental wire is located at a center in a radial direction of the coated PC steel stranded cable,
• each one of the plurality of outer circumferential elemental wires having a diameter smaller than a diameter of the inner circumferential elemental wire or the central elemental wire,
• the plurality of outer circumferential elemental wires comprising a first set of outer circumferential elemental wires, a space being formed between at least two adjacent outer circumferential elemental wires of the first set, the space being filled with the filler portion,
• the plurality of outer circumferential elemental wires comprising a second set, at least two adjacent outer circumferential elemental wires of the second set contact one another, and
• each of the outer circumferential elemental wire, the inner circumferential elemental wire, and the central elemental wire consists of a single strand.

A coated prestressed concrete (PC) steel stranded cable comprising:

• a stranded cable in which a plurality of elemental wires each composed of steel are twisted together;
• the stranded cable having a plurality of outer circumferential elemental wires constituting the outer circumference of the stranded cable, and an inner circumferential elemental wire or central elemental wire adjacent to the plurality of outer circumferential elemental wires, wherein the inner circumferential elemental wire or central elemental wire is located at a center in a radial direction of the coated PC steel stranded cable;
• an anti-corrosive coating having an outer circumferential portion that coats an outer circumference of the stranded cable;
• an outer coating that coats an outer circumference of the anti-corrosive coating;
• and
• an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable so as to follow expansion and contraction of the stranded cable,
• each one of the plurality of outer circumferential elemental wires having a diameter smaller than a diameter of the inner circumferential elemental wire or the central elemental wire,
• the plurality of outer circumferential elemental wires comprising a first set of outer circumferential elemental wires, a space being formed between at least two adjacent outer circumferential elemental wires of the first set, the space being filled with the filler portion,
• the plurality of outer circumferential elemental wires comprising a second set, at least two adjacent outer circumferential elemental wires of the second set contact one another, and
• each of the outer circumferential elemental wire, the inner circumferential elemental wire, and the central elemental wire consists of a single strand.