CN201128974Y - Non-bonded prestressed wire - Google Patents

Abstract

The utility model relates to a non-bonding prestressed steel strand, which comprises a prestressed steel strand that consists of a central steel wire and a plurality of external steel wires. The prestressed steel strand is characterized in that the periphery is coated by a plastic sheath; an anti-corrosion oil layer is arranged between the steel strand and the plastic sheath. The prestressed steel strand has the beneficial effects of improvement of the anti-corrosion properties, long service life, shortening of the construction period. And the prestressed steel strand can be widely used in the projects, such as sewage disposal plants, bridges and so on.

Description

Un-bonded prestressed steel strand

Technical field

The utility model belongs to prestress wire, relates in particular to a kind of un-bonded prestressed steel strand that improves antiseptic property.

Background technology

Prestress wire is one of important materials of prestressed structure, and its corrosion resistance directly influences workmanship.The description of " bridge is a body, and line is made string " image prestress wire in the construction of modern bridge and speedway, bringing into play important effect.In the prior art, prestress wire is directly to be twisted into the back by compressor wire to use as the steel strand finished product.Because the prestress wire itself that directly is twisted into does not have antiseptic property, this prestress wire very easily is corroded and gets rusty.In order to prevent corrosion, spray one deck antifouling paint on the surface of steel strand.Though can have the anticorrosion rustless property of short time, because the poor adhesive force of anticorrosive coat, prestress wire still can rust corrosion, the safety that directly threatens bridge.Preservative treatment before installing simultaneously also very bothers.

The utility model content

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provides a kind of antiseptic property good, the un-bonded prestressed steel strand of long service life, in-core oiling.

The utility model for achieving the above object, by the following technical solutions: a kind of un-bonded prestressed steel strand, comprise the prestress wire of forming by a core wire and Duo Gen cover wire, it is characterized in that: described prestress wire periphery is coated with plastic sheath, is provided with anticorrosion oil layer between steel strand and the plastic sheath.

Described plastic sheath adopts high-density polyethylene plastics.

The beneficial effects of the utility model: improved the prestress wire antiseptic property, long service life can shorten the construction period, can be widely used in the engineerings such as Wastewater Treatment Plant, bridge.

Description of drawings

Fig. 1 is a cross-sectional view of the present utility model;

Fig. 2 is a contour structures schematic diagram of the present utility model.

The specific embodiment:

Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing:

As shown in the figure, a kind of un-bonded prestressed steel strand comprises that described prestress wire periphery is coated with plastic sheath 4, is provided with anticorrosion oil layer 5 between steel strand and the plastic sheath by a core wire 1 and 6 prestress wires 3 that cover wire 2 is formed.Described plastic sheath adopts high-density polyethylene plastics.Un-bonded prestressed steel strand all is coated with no-cohesive prestressed reinforcement special anti-corrosion lubricating grease at the prestress wire external surface, use extrusion way plastic-coated layer of polyethylene sheath outside it again, the un-bonded prestressed steel strand of Zhi Zuoing can be embedded in directly stretch-draw in the member in this way, need not preset bellows, it is more convenient to construct, but its two ends ground tackle needs stressed all the time.

The above only is the preferred embodiment of un-bonded prestressed steel strand, is not its structure is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims (2)

1, a kind of un-bonded prestressed steel strand comprises the prestress wire of being made up of a core wire and Duo Gen cover wire, and it is characterized in that: described prestress wire periphery is coated with plastic sheath, is provided with anticorrosion oil layer between steel strand and the plastic sheath.

2, un-bonded prestressed steel strand according to claim 1 is characterized in that: described plastic sheath adopts high-density polyethylene plastics.

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