CN2880885Y

CN2880885Y - Hexagonal anticorrosive steel strand

Info

Publication number: CN2880885Y
Application number: CN 200520136011
Authority: CN
Inventors: 陈文杰; 龙跃; 黄芳玮; 唐建国; 谭柳芳; 曾宪民; 张升华; 陈艺玲
Original assignee: Liuzhou OVM Machinery Co Ltd
Current assignee: Liuzhou OVM Machinery Co Ltd
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-03-21
Anticipated expiration: 2015-12-31

Abstract

A hexagonal anticorrosive steel strand relates to an anticorrosive tendon. The steel strand is twisted by core wires and face wires. Anticorrosive material is packed around the core wires and face wires and between the twisted clearances. An anticorrosive layer is applied on external circumference of the face wires. The cross section of the steel strand is a hexagon or approximate hexagon. The anticorrosive material packed around the core wires and face wires and between twisted clearances and the anticorrosive layer material applied on external surface of face wires are both thermoplastic polymers- polythene or polyolefine etc. Since the cross sections of the steel strands are hexagons or approximate hexagons, when they are twisted into a tendon, various steel strands combines tightly with each other to provide small friction and high fatigue resistance strength. Besides, Thermoplastic polymer materials with good water-proof, anticorrosion properties, high ductility and favorable ageing resistant performance are packed inside and applied outside the steel strand, which does not produce pinholes, is not liable for breaking and peeling, increases the anticorrosion ability and the service life of the steel strands.

Description

The regular hexagon anticorrosive steel strand

Technical field:

The utility model relates to a kind of anticorrosion prestressed bars, and particularly a kind of profile is orthohexagonal anticorrosive steel strand.

Background technology:

Steel strand wires are generally by central hair, limit silk twisted forms, existing various anticorrosive steel strands generally have two kinds at present, first kind is directly at the outer coated one deck anticorrosive coat (referring to Fig. 2) of steel strand wires, second kind be with the central hair of steel strand wires with after each Gen Biansi carries out preservative treatment respectively again twisted become anticorrosive steel strand (referring to Fig. 3) or form combined anti-corrosion layer steel strand wires (referring to Fig. 4) at the outer coated one deck of steel strand wires anticorrosive coat again, but no matter adopt the anticorrosive steel strand of which kind of anti-corrosion method, for seven strands of general steel strand wires, its profile is petal with six radians, when this steel strand wires are formed presstressed reinforcing steel, coefficient of friction and frictional force between them are bigger, be subjected under the dynamic load effect, the fatigue resistance between the steel strand wires reduces.

The utility model content:

The technical problems to be solved in the utility model is: it is regular hexagon or approximate orthohexagonal anticorrosive steel strand that a kind of profile is provided, when they are formed presstressed reinforcing steel, can closely arrange between each root steel strand wires, frictional force is less between the steel strand wires, be subjected under the dynamic load effect, the fatigue resistance between the steel strand wires is than conventional height.

The technical scheme that solves its above-mentioned technical problem is: a kind of regular hexagon anticorrosive steel strand, form by central hair, limit silk twisted, periphery at the limit silk has anticorrosive coat, it is characterized in that: the shape of cross section of described steel strand wires is regular hexagon or approximate regular hexagon.

Another feature as the utility model regular hexagon anticorrosive steel strand is: be filled with anti-corrosion material all around and in the space of twisted at central hair and Bian Si (2).

Another feature as the utility model regular hexagon anticorrosive steel strand is: the central hair of described steel strand wires and each Gen Biansi skin have anticorrosive coat.

Another feature as the utility model regular hexagon anticorrosive steel strand is: around steel strand wires central hair and Bian Si and the anti-corrosion material of filling in the space of twisted and the periphery that is coated in the limit silk anti-corrosion material that forms anticorrosive coat all are thermoplastic macromolecule materials---polyethylene or polyolefin, around steel strand wires central hair and Bian Si and the anti-corrosion material of filling in the space of twisted merge into an organic whole with the anti-corrosion material that the periphery that is coated in the limit silk forms anticorrosive coat.

Because the utility model regular hexagon anticorrosive steel strand has been taked above-mentioned anti-corrosion measure, and its shape of cross section is regular hexagon or approximate regular hexagon, when they are formed presstressed reinforcing steel, can closely arrange between each root steel strand wires, frictional force is little, and fatigue resistance improves; Secondly, because the anti-corrosion material that the steel strand wires outermost layer applies all is to have excellent waterproof, Corrosion Protection with the material that is filled in steel strand wires inside, the thermoplastic macromolecule material that ductility and ageing resistance are good, can not produce pin hole, not easy to crack, difficult drop-off, thus the steel strand wires antiseptic power improved greatly, prolonged the service life of steel strand wires.

Description of drawings:

Fig. 1～Fig. 3: the structural representation of the regular hexagon anticorrosive steel strand of the utility model;

Fig. 4～Fig. 6: the structural representation of existing anticorrosive steel strand.

The specific embodiment:

Embodiment one:

A kind of shape of cross section is orthohexagonal anticorrosive steel strand, is formed by central hair 1, limit silk 2 twisteds, in the periphery of limit silk anticorrosive coat 5 is arranged, and the shape of cross section of described steel strand wires is regular hexagon (referring to Fig. 1).

Embodiment two:

A kind of shape of cross section is orthohexagonal anticorrosive steel strand, its basic structure is with embodiment one, form by central hair 1, limit silk 2 twisteds, periphery at the limit silk has anticorrosive coat 5, the shape of cross section of described steel strand wires is a regular hexagon, and institute's difference is: be filled with anti-corrosion material 3 (referring to Fig. 2) around central hair 1 and Bian Si 2 and in the space of twisted.

Around central hair 1 and Bian Si 2 and the anti-corrosion material 3 of filling in the space of twisted can be the same or different with the anti-corrosion material that the periphery that is coated in the limit silk forms anticorrosive coat 5.

Embodiment three:

A kind of shape of cross section is orthohexagonal anticorrosive steel strand, its basic structure is with embodiment one, still form by central hair 1, limit silk 2 twisteds, periphery at the limit silk has anticorrosive coat 5, the shape of cross section of described steel strand wires is a regular hexagon, institute's difference is: the central hair 1 of described steel strand wires and Ge Gen limit silk 2 skins have anticorrosive coat 4, scribbled the central hair 1 of anticorrosive coat 4 and Bian Si 2 around and be filled with anti-corrosion material 3 in the space of twisted, can not fill out yet, Figure 3 shows that not to be filled with anti-corrosion material 3.

Embodiment four:

A kind of shape of cross section is orthohexagonal anticorrosive steel strand, its basic structure is with embodiment two, still by central hair 1, silk 2 twisteds in limit form, around central hair 1 and Bian Si 2 and in the space of twisted, be filled with anti-corrosion material 3, periphery at the limit silk has anticorrosive coat 5, the shape of cross section of described steel strand wires is a regular hexagon, institute's difference is: describedly be filled in around central hair 1 and the Bian Si 2 and the anti-corrosion material 3 in the space of twisted, the material that is coated in the periphery formation anticorrosive coat 5 of limit silk 2 all is thermoplastic macromolecule material---polyethylene, polyolefin etc., they clamp-on in the steel strand wires under cryogenic conditions, inside stuffing that formation is merged into an organic whole and outside coat guarantee that each root central hair 1 and the Bian Si 2 in the steel strand wires covered by inner stuffing and outside coat.

As a kind of conversion of the utility model embodiment one, embodiment two, embodiment three, embodiment four, the shape of cross section of described steel strand wires is approximate regular hexagon.

Claims

1, a kind of regular hexagon anticorrosive steel strand is formed by central hair (1), limit silk (2) twisted, in the periphery of limit silk anticorrosive coat (5) is arranged, and it is characterized in that: the shape of cross section of described steel strand wires is regular hexagon or approximate regular hexagon.

2, regular hexagon anticorrosive steel strand according to claim 1 is characterized in that: at central hair (1) and limit silk (2) all around and be filled with anti-corrosion material (3) in the space of twisted.

3, regular hexagon anticorrosive steel strand according to claim 1 and 2 is characterized in that: the central hair of described steel strand wires (1) and each Gen Biansi (2) skin have anticorrosive coat (4).

4, regular hexagon anticorrosive steel strand according to claim 2, it is characterized in that: steel strand wires central hair (1) and limit silk (2) all around and the anti-corrosion material of filling in the space of twisted (3) and the periphery that is coated in the limit silk anti-corrosion material that forms anticorrosive coat (5) all are thermoplastic macromolecule materials---polyethylene or polyolefin, around steel strand wires central hair and Bian Si and the anti-corrosion material (3) of filling in the space of twisted merge into an organic whole with the anti-corrosion material that the periphery that is coated in the limit silk forms anticorrosive coat (5).