CN112323525B - Composite material winding reinforced steel cable and manufacturing method thereof - Google Patents
Composite material winding reinforced steel cable and manufacturing method thereof Download PDFInfo
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- CN112323525B CN112323525B CN202011281544.1A CN202011281544A CN112323525B CN 112323525 B CN112323525 B CN 112323525B CN 202011281544 A CN202011281544 A CN 202011281544A CN 112323525 B CN112323525 B CN 112323525B
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- 239000002131 composite material Substances 0.000 title claims abstract description 96
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 238000004804 winding Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 58
- 239000000945 filler Substances 0.000 claims abstract description 22
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 22
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005536 corrosion prevention Methods 0.000 description 4
- 238000001723 curing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention discloses a composite material winding reinforced steel cable and a manufacturing method thereof. The composite wound reinforcing steel cord includes: multi-strand steel cords, unidirectional composite cloths, and thermoset fillers. Wherein the unidirectional composite cloth is wound on the surface of the multi-strand steel cable; the thermoset filler is disposed between the plurality of strands of steel cord, between the plurality of strands of steel cord and the unidirectional composite cloth, and within the unidirectional composite cloth. The composite material winding reinforced steel cable has excellent corrosion resistance and fatigue resistance, is simple in manufacturing process, is convenient to implement on a construction site, and has obvious economic benefit.
Description
Technical Field
The invention relates to the technical field of steel cable corrosion prevention and reinforcement, in particular to a composite material winding reinforced steel cable and a manufacturing method thereof.
Background
In the established suspension bridges and cable-stayed bridges, the main cables of the cable system mainly consist of a certain number of steel cables which are exposed to wind, rain and moist natural environments for a long time and bear dynamic and static loads from the bridge, so that corrosion and fatigue problems are very easy to occur, and once the steel cables are corroded or fatigued, serious safety accidents can be caused. Corrosion of steel cables is present in almost all established cable bridges, and the main cause of corrosion is the retention of the water vapor intrusion during construction and the entry of outside water vapor caused by damage to the corrosion-resistant coating during operation. How to reinforce and prevent corrosion of the steel cable is a current problem to be solved urgently.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present invention is to propose a composite wound reinforced steel cord and a method for its manufacture. The composite material winding reinforced steel cable has excellent corrosion resistance and fatigue resistance, is simple in manufacturing process, is convenient to implement on a construction site, and has obvious economic benefit.
In one aspect of the invention, a composite wound reinforcement wire rope is provided. According to an embodiment of the present invention, the composite wound reinforcing steel cord includes: a plurality of steel cords; a unidirectional composite cloth wound on the surface of the multi-strand steel cable; a thermoset filler disposed between the plurality of strands, between the plurality of strands and the unidirectional composite cloth, and within the unidirectional composite cloth.
According to the composite material wound reinforced steel rope, the advantages of light weight, high strength, corrosion resistance and fatigue resistance of the composite material are fully utilized, the composite material can bear force together with the steel rope, and the fatigue life of the steel rope is remarkably prolonged. Meanwhile, by combining with thermosetting filler, the unidirectional composite cloth can form a protective layer on the surface of the steel cable, so that the penetration of external water vapor is effectively avoided, and the anticorrosion effect is achieved. In addition, the manufacturing process of winding the reinforced steel rope by the composite material is simple, is convenient to implement on a construction site, and has remarkable economic benefit.
In addition, the composite material wound reinforcing steel cord according to the above embodiment of the present invention may have the following additional technical features:
in some embodiments of the invention, the multi-strand steel cord comprises a plurality of subunits, each of the subunits having a unidirectional composite cloth wrapped around a surface thereof.
In some embodiments of the invention, the unidirectional composite cloth has an angle of 10 ° to 30 ° with respect to the length of the steel cord.
In some embodiments of the invention, the overlapping width of two adjacent turns of the unidirectional composite cloth is 2-5 cm.
In some embodiments of the invention, the unidirectional composite cloth is a glass fiber composite cloth, a carbon fiber composite cloth, a basalt fiber composite cloth, or a hybrid composite cloth.
In some embodiments of the invention, the thermoset filler is an epoxy resin.
In another aspect of the invention, the invention provides a method of making the composite wrapped reinforcement cable of the above-described embodiment. According to an embodiment of the invention, the method comprises: (1) providing a multi-strand steel cord; (2) Winding unidirectional composite cloth on the surface of the multi-strand steel cable; (3) Sleeving a heat transfer sleeve on the part of the multi-strand steel cable wound with the unidirectional composite cloth, and closing one end of the heat transfer sleeve along the length direction of the multi-strand steel cable; (4) injecting a thermoset filler into the heat transfer sleeve; (5) Heat treating the heat transfer sleeve to cure the thermoset filler; (6) And (5) curing the product obtained in the step (5) to obtain the composite material winding reinforced steel cable.
According to the method for manufacturing the composite material winding reinforced steel rope, which is disclosed by the embodiment of the invention, firstly, the unidirectional composite material cloth is wound on the surface of the stranded steel rope, then the heat transfer sleeve is sleeved on one section of the wound unidirectional composite material cloth, and one end of the heat transfer sleeve is closed. Subsequently, a thermoset filler is injected into the heat transfer jacket, which may be filled between the multi-strand cables, between the multi-strand cables and the composite cloth, and immersed in the composite cloth. Further, the heat transfer sleeve is subjected to heat treatment so as to solidify the thermosetting filler, so that the unidirectional composite material is distributed on the surface of the steel cable to form a protective layer, the infiltration of external water vapor is effectively avoided, and the anticorrosion effect is achieved. The method has simple process, is convenient to implement on the construction site, and has obvious economic benefit.
In addition, the method for manufacturing the composite material wound reinforced steel rope according to the above embodiment of the present invention may further have the following additional technical features:
In some embodiments of the invention, before step (2), further comprising: the multi-strand steel cord is divided into a plurality of sub-groups, and a unidirectional composite cloth is wound on the surface of each sub-group.
In some embodiments of the invention, the heat treatment is accomplished by controlling an electric cabinet to heat the heat transfer sleeve using a heating device.
In some embodiments of the invention, the method further comprises: repeating steps (2) - (5) a plurality of times to obtain a predetermined length of said composite wrapped reinforcement cable.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic perspective view of a composite wrapped reinforcement cable according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of a composite wrapped around a reinforcing steel cord in accordance with one embodiment of the present invention;
fig. 3 is a cross-sectional view of a composite wrapped around a reinforcing steel cord in accordance with another embodiment of the present invention.
Reference numerals: 1-steel rope, 2-unidirectional composite cloth, 3-thermosetting filler and 4-heat transfer sleeve.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In addition, the unidirectional composite cloth used in the present invention is a cloth made of a fiber reinforced composite (FRP).
In one aspect of the invention, a composite wound reinforcement wire rope is provided. Referring to fig. 1 and 2, according to an embodiment of the present invention, the composite wound reinforcing steel cord includes: a multi-strand steel rope 1, a unidirectional composite cloth 2 and a thermosetting filler 3.
The composite wound reinforcing steel cord according to an embodiment of the present invention is described in further detail below.
Referring to fig. 3, the multi-strand wire rope 1 may be further divided into a plurality of sub-groups, each of which is wound with a unidirectional composite cloth on a surface thereof, according to some embodiments of the present invention. Thereby, the reinforcement and corrosion prevention effect of the wire rope can be further improved.
According to some embodiments of the present invention, the angle between the fiber direction of the unidirectional composite cloth 3 and the longitudinal direction of the wire rope 1 (angle indicated by θ in fig. 1) may be 10 ° to 30 °, for example 10 °, 15 °,20 °, 25 °,30 °, etc. Therefore, the composite material cloth can bear tensile force together with the steel rope on one hand, and can circumferentially wrap the steel rope on the other hand, so that the multi-strand steel rope forms a whole, and better mechanical properties are obtained.
According to some embodiments of the invention, the overlap width of two adjacent turns of unidirectional composite cloth may be 2-5 cm. Therefore, the tight and complete wrapping of the steel rope by the composite cloth can be further ensured.
According to some embodiments of the invention, the unidirectional composite cloth may be a glass fiber composite cloth, a carbon fiber composite cloth, a basalt fiber composite cloth, or a hybrid composite cloth. The sources of the above specific unidirectional composite cloths are not particularly limited and are commercially available.
In addition, parameters such as the width, thickness, and number of winding layers of the unidirectional composite cloth for winding the multi-strand wire rope may be designed according to the fiber material of the unidirectional composite cloth selected and the diameter of the wire rope.
According to some embodiments of the invention, the thermoset filler may be an epoxy resin.
In another aspect of the invention, the invention provides a method of making the composite wrapped reinforcement cable of the above-described embodiment. According to an embodiment of the invention, the method comprises:
(1) A multi-strand steel cord is provided.
According to some embodiments of the invention, the multi-strand cable may be either a new cable or an old lock (e.g., a cable-supported bridge cable) that has been used in a building construction.
(2) Winding unidirectional composite cloth on the surface of the multi-strand steel cable.
According to some embodiments of the present invention, the multi-strand wire rope may be divided into a plurality of sub-groups and the unidirectional composite cloth wound around the surface of each sub-group before the unidirectional composite cloth is wound around the surface of the multi-strand wire rope. Thereby, the reinforcement and corrosion prevention effect of the wire rope can be further improved.
(3) The part of the multi-strand steel rope wound with the unidirectional composite cloth is sleeved with a heat transfer sleeve, and one end of the heat transfer sleeve along the length direction of the multi-strand steel rope is sealed.
The specific type of the heat transfer sleeve is not particularly limited as long as it can be fitted over the wire rope and plays a role in heat transfer. According to some embodiments of the invention, the heat transfer sleeve may be a steel sleeve as is common in the art. In addition, the heat transfer sleeve is sleeved in a manner referring to fig. 1.
(4) A thermoset filler is injected into the heat transfer jacket.
Preferably, the heat transfer sleeve is injected with a thermosetting filler by means of pressurized injection. Thus, the filling effect of the thermosetting filler is better.
(5) The heat transfer sleeve is heat treated to cure the thermoset filler.
The specific treatment temperature and treatment time used for the heat treatment may be determined according to the kind of thermosetting filler actually used, so long as the thermosetting filler can be effectively cured.
According to some embodiments of the invention, the heat treatment may be accomplished by controlling an electric cabinet to heat the heat transfer sleeve using a heating device. Therefore, the convenience of construction can be further improved.
According to some embodiments of the present invention, by repeating the above steps (2) to (5) a plurality of times, a composite wound reinforcing steel cord of a predetermined length can be obtained. It will be appreciated that for a greater length of steel cord to be reinforced, it may be subjected to operations such as wrapping the composite cloth in sections, heat curing, etc., to obtain a predetermined length of composite wrapped reinforced steel cord.
(6) Curing the product obtained in the step (5) to obtain the composite material winding reinforced steel cable.
It should be noted that the specific method of curing is not particularly limited, and a cable curing method mature in the art can be adopted, and will not be described herein.
In summary, the composite material wound reinforced steel rope and the manufacturing method thereof provided by the invention can have at least one of the following advantages:
(1) The composite cloth is wound on the surface of the steel cable, so that the fatigue life of the steel cable can be prolonged; the fiber direction of the composite cloth is more along the length direction of the steel cable, so that the reinforcing effect can be more effectively provided; the composite cloth itself is also an anti-corrosive material, and the resulting closed system can effectively protect the internal steel ropes.
(3) The adopted material is energy-saving and environment-friendly, and can be used for the corrosion prevention and reinforcement of the existing bridge steel cable and also can be used for newly building the bridge steel cable.
(3) The composite material cloth is various in winding mode, and can be used for winding the whole multi-strand steel cable, and winding the whole multi-strand steel cable and a plurality of subgroups in the whole multi-strand steel cable to obtain better mechanical properties.
(4) The winding and heat treatment processes in the manufacturing method are easy to realize automatic construction through a set of automatic winding device and an automatic heating device, and the automatic winding device and the automatic heating device are accurate to control and convenient to construct.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (5)
1. A composite wound reinforcing steel cord comprising:
A plurality of steel cords;
a unidirectional composite cloth wound on the surface of the multi-strand steel cable;
A thermoset filler disposed between said plurality of strands, between said plurality of strands and said unidirectional composite cloth, and among said unidirectional composite cloth,
The included angle between the fiber direction of the unidirectional composite cloth and the length direction of the steel cable is 10-30 degrees;
the unidirectional composite material cloth is carbon fiber composite material cloth,
The multi-strand steel rope comprises a plurality of subgroups, the surface of each subgroup is wound with unidirectional composite cloth,
The overlapping width of two adjacent circles of unidirectional composite cloth is 2-5 cm.
2. The composite wound reinforcing steel cord of claim 1, wherein the thermoset filler is an epoxy resin.
3. A method of making the composite wrapped around a reinforced steel cord as claimed in claim 1 or 2, comprising:
(1) Providing a plurality of strands of steel cords;
(2) Winding unidirectional composite cloth on the surface of the multi-strand steel cable;
(3) Sleeving a heat transfer sleeve on the part of the multi-strand steel cable wound with the unidirectional composite cloth, and closing one end of the heat transfer sleeve along the length direction of the multi-strand steel cable;
(4) Injecting a thermoset filler into the heat transfer sleeve;
(5) Heat treating the heat transfer sleeve to cure the thermoset filler;
(6) Curing the product obtained in the step (5) to obtain the composite material winding reinforced steel cable,
The method further comprises the following steps before the step (2): the multi-strand steel cord is divided into a plurality of sub-groups, and a unidirectional composite cloth is wound on the surface of each sub-group.
4. A method according to claim 3, wherein the heat treatment is performed by controlling an electric cabinet and heating the heat transfer sleeve using a heating device.
5. A method as claimed in claim 3, further comprising: repeating steps (2) - (5) a plurality of times to obtain a predetermined length of said composite wrapped reinforcement cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281544.1A CN112323525B (en) | 2020-11-16 | Composite material winding reinforced steel cable and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281544.1A CN112323525B (en) | 2020-11-16 | Composite material winding reinforced steel cable and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112323525A CN112323525A (en) | 2021-02-05 |
| CN112323525B true CN112323525B (en) | 2024-06-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880885Y (en) * | 2005-12-31 | 2007-03-21 | 柳州欧维姆机械股份有限公司 | Hexagonal anticorrosive steel strand |
| CN111305034A (en) * | 2020-03-31 | 2020-06-19 | 广州珠江黄埔大桥建设有限公司 | Heat-insulation fire-resistant protection structure for main cable of suspension bridge and construction method of heat-insulation fire-resistant protection structure |
| CN213772698U (en) * | 2020-11-16 | 2021-07-23 | 清华大学 | Composite material winding reinforced steel cable |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880885Y (en) * | 2005-12-31 | 2007-03-21 | 柳州欧维姆机械股份有限公司 | Hexagonal anticorrosive steel strand |
| CN111305034A (en) * | 2020-03-31 | 2020-06-19 | 广州珠江黄埔大桥建设有限公司 | Heat-insulation fire-resistant protection structure for main cable of suspension bridge and construction method of heat-insulation fire-resistant protection structure |
| CN213772698U (en) * | 2020-11-16 | 2021-07-23 | 清华大学 | Composite material winding reinforced steel cable |
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