JPH1046746A - Cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate execution work by intertwisting plural steel wires formed by bundling PC steel stranded wires, and binding them by a belt body formed of either of a synthetic resin, glass fiber or carbon fiber. SOLUTION: Steel wires 2 composed of PC steel stranded wires 6 by intertwisting plural side wires 5 around a conductor 4, are molded, and a synthetic resin-made covering inner layer 7 is formed on an outer periphery of the conductor 4 and the side wires 5. A covering intermediate layer 8 and a covering outer layer 9 are formed on an outer periphery of this covering inner layer 7, and a sliding material 10 is interposed between these covering intermediate layer and covering outer layer 9. Next, a belt body 3 composed of either of a synthetic resin, glass fiber or carbon fiber is wound in a spiral shape round an outer peripheral surface of intertwisted steel wires 2, and is adhered by an adhesive on an inside surface, and a cable 1 is molded. Therefore, the cable in no need of being bundled by taking labor at a job site or the like can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable.

[0002]

2. Description of the Related Art A conventional tensile steel wire for a ground anchor uses a plurality of PC steel wires arranged side by side. For example, in the case of tensioning with a force of 50 tons, one wire is tensioned with a force of 10 tons. . In addition, cables for suspension bridges were also used by joining PC steel wires according to the suspended load.

[0003]

However, since the above-mentioned tensile steel wire for the ground anchor and the cable for the suspension bridge are bundled at the site or the like every time they are used, it takes a lot of trouble.

[0004] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a cable which does not need to be bundled with trouble on site.

[0005]

A means for achieving the above object is that a plurality of steel wires formed by binding cables of PC steel strands are bundled together and bound by a band. The strip is made of any one of synthetic resin, glass fiber, and carbon fiber, and the steel wire is a PC steel stranded wire in which a plurality of side wires are twisted around a core wire, and a synthetic resin wire is formed around the core wire and the side wire. Is formed, and a coating middle layer and a coating outer layer are formed on the outer periphery of the coating inner layer, and a lubricant is interposed between the coating middle layer and the coating coating outer layer.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cable according to the present invention will be described below in detail with reference to the drawings. 1 is a perspective view of the cable of the present invention, FIG. 2 is a vertical sectional view of the same, FIG.
FIG. 4 is a sectional view of a PC steel strand.

In the cable 1 of the present invention, a plurality of steel wires 2 are brought together and bound by a band 3. This steel wire 2
Are set in accordance with the place of use and the load. The steel wire 2 is a PC steel stranded wire 6 formed by twisting a plurality of side wires 5 around a core wire 4. A coating inner layer 7 made of a synthetic resin is formed around the core wire 4 and the side wire 5. Formed on the outer periphery of the inner layer 8 and the outer coating layer 9, and the lubricating material 10 is interposed between the inner coating layer 8 and the outer coating layer 9, so that the intermediate coating layer 8 does not weld to the inner coating layer 7. The material is easy to peel.

Accordingly, when the cable 1 is used as a tension material for a ground anchor, the exfoliation work of the distal end portion is facilitated, so that the fixing long portion can be easily formed. Since the rust-prevention treatment is performed almost completely, the quality can be improved without generating rust on the PC steel strand 6, and the adhesion to concrete can be improved.

The band 3 is formed of a synthetic resin, glass fiber or carbon fiber to have an appropriate width, spirally wound on the outer peripheral surface of the joined steel wires 2, and adhered with an adhesive 11 on the inner surface. ing. Therefore, when the cable 1 is used as a tension material for a ground anchor, for example, the band 3 is formed of various fiber materials, so that the adhesive force with concrete can be improved.

[0010]

According to the present invention, a steel wire formed by bundling wires of PC steel is
Since a plurality of cables are brought together and bound by a band to form a cable, an arbitrary number of cables can be selected and bundled.

Since the band is made of any one of synthetic resin, glass fiber and carbon fiber, when the cable is used as a tension material for a ground anchor, the adhesive strength with the grout can be increased.

[0012] The steel wire is a PC steel stranded wire in which a plurality of side wires are twisted around a core wire, and a synthetic resin-based coating inner layer is formed on the outer circumference of the core wire and the side wire. By forming a coating outer layer, a lubricant is interposed between the coating middle layer and the coating coating outer layer, and the PC steel stranded wire is multiply coated to improve rust prevention performance.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cable.

FIG. 2 is a longitudinal sectional view of a cable.

FIG. 3 is a cross-sectional view of a cable.

FIG. 4 is a sectional view of a PC steel strand.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable 2 Steel wire 3 Strip 4 Core wire 5 Side wire 6 PC steel strand 7 Inner coating layer 8 Middle coating layer 9 Outer coating layer 10 Lubricant 11 Adhesive

Claims (3)

[Claims] 1. A steel wire formed by bundling wires of PC steel,
A cable characterized in that a plurality of cables are joined together and bound by a band. 2. The cable according to claim 1, wherein the band is formed of any one of synthetic resin, glass fiber, and carbon fiber. 3. The steel wire is a PC steel stranded wire in which a plurality of side wires are twisted around a core wire, and a coating inner layer made of a synthetic resin is formed around the core wire and the side wire. The cable according to claim 1 or 2, wherein a coating middle layer and a coating outer layer are formed, and a sliding material is interposed between the coating middle layer and the coating coating outer layer.