CN112323525A - 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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- CN112323525A CN112323525A CN202011281544.1A CN202011281544A CN112323525A CN 112323525 A CN112323525 A CN 112323525A CN 202011281544 A CN202011281544 A CN 202011281544A CN 112323525 A CN112323525 A CN 112323525A
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- 239000002131 composite material Substances 0.000 title claims abstract description 103
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 238000004804 winding Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 65
- 239000000945 filler Substances 0.000 claims abstract description 23
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 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
- 239000003365 glass 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
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000013007 heat curing 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
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/206—Epoxy resins
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3003—Glass
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3007—Carbon
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/202—Environmental resistance
- D07B2401/2025—Environmental resistance avoiding corrosion
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2015—Construction industries
- D07B2501/203—Bridges
Abstract
The invention discloses a composite material winding reinforced steel cable and a manufacturing method thereof. The composite material wound reinforcing steel cord comprises: multi-strand steel cables, unidirectional composite material cloth and thermosetting filler. Wherein the unidirectional composite cloth is wound on the surface of the multi-strand steel cable; the thermosetting filler is arranged among the multi-strand steel cables, the unidirectional composite material cloth and among the unidirectional composite material 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 remarkable economic benefit.
Description
Technical Field
The invention relates to the technical field of steel cable anticorrosion reinforcement, in particular to a composite material winding reinforced steel cable and a manufacturing method thereof.
Background
In the existing suspension bridge and cable-stayed bridge, the main cable of the cable system mainly comprises a certain amount of steel cables, the steel cables are exposed in the wind, rain and wet natural environment for a long time and bear the dynamic load and static load from the bridge, the corrosion and fatigue problems are easy to occur, and once the corrosion or fatigue problems occur to the steel cables, serious safety accidents can be caused. Corrosion of steel cables occurs in almost all existing cable bridges, and the main cause of corrosion is the ingress of external moisture due to the retention of ingressing moisture during construction and the damage of the anti-corrosive coating during operation. How to reinforce and prevent corrosion of the steel cable is a problem to be solved urgently at present.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to propose a composite wound reinforcing steel cord and a method for making the same. 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 remarkable economic benefit.
In one aspect of the invention, a composite wound reinforcing steel cord is provided. According to an embodiment of the invention, the composite wound reinforcing steel cord comprises: a multi-strand steel cable; a unidirectional composite cloth wound around the surface of the plurality of steel cords; the thermosetting filler is arranged among the plurality of steel cables, between the plurality of steel cables and the unidirectional composite material cloth and in the unidirectional composite material cloth.
According to the reinforced steel cable wound by the composite material, the advantages of light weight, high strength, corrosion resistance and fatigue resistance of the composite material are fully utilized, the composite material and the steel cable can bear force together, and the fatigue life of the steel cable is remarkably prolonged. Meanwhile, the one-way composite material cloth can form a protective layer on the surface of the steel cable by combining the thermosetting filler, so that the penetration of external water vapor is effectively avoided, and the anti-corrosion effect is achieved. In addition, the manufacturing process of the composite material winding reinforced steel cable is simple, the composite material winding reinforced steel cable is convenient to implement on a construction site, and the composite material winding reinforced steel cable has obvious economic benefit.
In addition, the composite material wound reinforced 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 surface wrapped with a unidirectional composite cloth.
In some embodiments of the present invention, the fiber direction of the unidirectional composite fabric is at an angle of 10 ° to 30 ° to the length direction of the steel cord.
In some embodiments of the invention, the overlapping width of two adjacent circles 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 thermosetting filler is an epoxy resin.
In another aspect of the invention, the invention provides a method of making the composite wrap reinforced steel cord of the above embodiments. According to an embodiment of the invention, the method comprises: (1) providing a multi-strand steel cord; (2) winding unidirectional composite material cloth on the surfaces of the multi-strand steel cables; (3) sleeving a heat transfer sleeve on the part of the multi-strand steel cable wound with the unidirectional composite material cloth, and sealing one end of the heat transfer sleeve along the length direction of the multi-strand steel cable; (4) injecting a thermosetting filler into the heat transfer sleeve; (5) heat treating the heat transfer sleeve to cure the thermoset filler; (6) and (5) maintaining 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 cable of the embodiment of the invention, firstly, the unidirectional composite material cloth is wound on the surface of the stranded steel cable, then the section wound with the unidirectional composite material cloth is sleeved with the heat transfer sleeve, and one end of the heat transfer sleeve is sealed. And then, injecting thermosetting filler into the heat transfer sleeve, wherein the thermosetting filler can be filled among the plurality of steel cables, between the plurality of steel cables and the composite material cloth and is immersed in the composite material cloth. Furthermore, the heat-transfer sleeve is subjected to heat treatment so as to solidify the thermosetting filler, so that the unidirectional composite material cloth forms a protective layer on the surface of the steel cable, thereby effectively avoiding the permeation of external water vapor and playing a role in corrosion prevention. The method has simple process, is convenient to implement on a construction site, and has remarkable economic benefit.
In addition, the method for manufacturing the composite material winding 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 present invention, step (2) is preceded by: the multi-strand steel cord is divided into a plurality of subgroups and a unidirectional composite cloth is wound on a surface of each of the subgroups.
In some embodiments of the invention, the heat treatment is performed by controlling an electric cabinet, using a heating device to heat the heat transfer sleeve.
In some embodiments of the invention, the method further comprises: repeating the steps (2) to (5) for a plurality of times so as to obtain the composite material winding reinforced steel cable with the preset length.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic perspective view of a composite wound reinforcing steel cord according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of a composite wrapped reinforcing steel cord according to one embodiment of the present invention;
FIG. 3 is a cross-sectional view of a composite wrapped reinforcing steel cord according to another embodiment of the present invention.
Reference numerals: 1-steel cable, 2-unidirectional composite material cloth, 3-thermosetting filler and 4-heat transfer sleeve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The unidirectional composite cloth used in the present invention is a cloth made of a Fiber Reinforced Plastic (FRP).
In one aspect of the invention, a composite wound reinforcing steel cord is provided. Referring to fig. 1 and 2, according to an embodiment of the present invention, the composite wrap reinforced steel cord comprises: a multi-strand steel cable 1, a unidirectional composite material cloth 2 and a thermosetting filler 3.
The composite wrap reinforced steel cord according to embodiments of the present invention is described in further detail below.
Referring to fig. 3, the multi-strand steel cord 1 may be further divided into a plurality of subgroups according to some embodiments of the present invention, each subgroup having a surface wound with unidirectional composite cloth. This can further improve the reinforcing and corrosion preventing effects of the steel cord.
According to some embodiments of the present invention, the included angle between the fiber direction of the unidirectional composite fabric cloth 3 and the length direction of the steel cord 1 (the included angle shown by θ in fig. 1) may be 10 ° to 30 °, for example, 10 °, 15 °, 20 °, 25 °, 30 °, and the like. Therefore, the composite material cloth can bear the pulling force together with the steel cable on one hand, and can wrap the steel cable in the circumferential direction on the other hand, so that a plurality of steel cables form a whole, and better mechanical property is obtained.
According to some embodiments of the invention, the overlapping width of two adjacent circles of unidirectional composite cloth can be 2-5 cm. Therefore, the steel cable can be further ensured to be tightly and completely wrapped by the composite material cloth.
According to some embodiments of the present 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 cloth are not particularly limited and are commercially available.
In addition, it should be noted that parameters such as the width, thickness and number of winding layers of the unidirectional composite cloth for winding the multi-strand steel cord may be designed according to the selected fiber material of the unidirectional composite cloth and the diameter of the steel cord.
According to some embodiments of the invention, the thermosetting filler may be an epoxy resin.
In another aspect of the invention, the invention provides a method of making the composite wrap reinforced steel cord of the above embodiments. 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 steel cable may be either a new cable or an old lock already applied to the building construction (e.g. a cable load-bearing bridge cable).
(2) And winding unidirectional composite cloth on the surfaces of the multi-strand steel cables.
According to some embodiments of the present invention, the multi-strand steel cord may be divided into a plurality of subgroups and the unidirectional composite cloth may be wound on a surface of each subgroup before the unidirectional composite cloth is wound on a surface of the multi-strand steel cord. This can further improve the reinforcing and corrosion preventing effects of the steel cord.
(3) The heat transfer sleeve is sleeved on the part of the multi-strand steel cable wound with the unidirectional composite material cloth, and one end of the heat transfer sleeve along the length direction of the multi-strand steel cable is sealed.
The specific type of the heat transfer sleeve is not particularly limited, as long as the heat transfer sleeve can be sleeved on the steel cable and has a heat transfer function. According to some embodiments of the present invention, the heat transfer sleeve may be a steel sleeve as is common in the art. In addition, the sleeving manner of the heat transfer sleeve can refer to fig. 1.
(4) Thermoset filler is injected into the heat transfer sleeve.
Preferably, the heat transfer sleeve is injected with a thermoset filler by pressurized injection. Thereby, the filling effect of the thermosetting filler is better.
(5) The heat transfer sleeve is heat treated to cure the thermoset filler.
It should be noted that the specific treatment temperature and treatment time for the heat treatment may be determined depending on the kind of the thermosetting filler actually used, as long as the thermosetting filler can be effectively cured.
According to some embodiments of the invention, the heat treatment may be performed by controlling the electric cabinet, heating the heat transfer sleeve using a heating device. This can further improve the convenience of construction.
According to some embodiments of the present invention, by repeating the above steps (2) to (5) a plurality of times, a predetermined length of the composite-material-wrapped reinforcing steel cord can be obtained. It will be understood that for the steel cord to be reinforced having a greater length, it can be subjected in sections to operations of winding the composite cloth, heat curing, etc., so as to obtain a predetermined length of composite wound reinforcing steel cord.
(6) And (5) maintaining the product obtained in the step (5) to obtain the composite material winding reinforced steel cable.
It should be noted that the concrete method of curing is not particularly limited, and steel cable curing methods developed in the art may be used, and will not be described herein.
In summary, the composite material winding reinforced steel cable and the manufacturing method thereof provided by the invention can have at least one of the following advantages:
(1) the composite material 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 material cloth is more along the length direction of the steel cable, so that the reinforcing effect can be more effectively provided; the composite cloth is also an anticorrosive material, and the formed closed system can effectively protect the inner steel cable.
(3) The adopted materials are energy-saving and environment-friendly, and can be used for the anticorrosion reinforcement of the existing bridge steel cable and can also be used for newly-built bridge steel cables.
(3) The winding mode of the composite material cloth is various, the multi-strand steel cable can be integrally wound, and the multi-strand steel cable and a plurality of subgroups in the multi-strand steel cable can be wound, so that better mechanical property is obtained.
(4) The winding and heat treatment processes in the manufacturing method are easy to realize automatic construction, accurate control and convenient construction through a set of automatic winding device and automatic heating device.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A composite wound reinforcing steel cord comprising:
a multi-strand steel cable;
a unidirectional composite cloth wound around the surface of the plurality of steel cords;
the thermosetting filler is arranged among the plurality of steel cables, between the plurality of steel cables and the unidirectional composite material cloth and in the unidirectional composite material cloth.
2. The composite wound reinforced steel cord according to claim 1, wherein said multi-strand steel cord comprises a plurality of subunits, each of said subunits having a surface wound with a unidirectional composite cloth.
3. The composite wound reinforced steel cord according to claim 1 or 2, wherein the angle between the fiber direction of said unidirectional composite cloth and the length direction of the steel cord is 10 ° to 30 °.
4. The composite-wrapped reinforced steel cord according to claim 1 or 2, wherein the overlapping width of two adjacent turns of the unidirectional composite cloth is 2 to 5 cm.
5. The composite wound reinforced steel cord according to claim 1 or 2, wherein 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.
6. The composite wound reinforcing steel cord according to claim 1 or 2, characterized in that said thermosetting filler is an epoxy resin.
7. A method of making a composite wound reinforcing steel cord according to any one of claims 1 to 6, comprising:
(1) providing a multi-strand steel cord;
(2) winding unidirectional composite material cloth on the surfaces of the multi-strand steel cables;
(3) sleeving a heat transfer sleeve on the part of the multi-strand steel cable wound with the unidirectional composite material cloth, and sealing one end of the heat transfer sleeve along the length direction of the multi-strand steel cable;
(4) injecting a thermosetting filler into the heat transfer sleeve;
(5) heat treating the heat transfer sleeve to cure the thermoset filler;
(6) and (5) maintaining the product obtained in the step (5) to obtain the composite material winding reinforced steel cable.
8. The method of claim 7, further comprising, prior to step (2): the multi-strand steel cord is divided into a plurality of subgroups and a unidirectional composite cloth is wound on a surface of each of the subgroups.
9. The method of claim 7, wherein the heat treating is accomplished by controlling an electrical cabinet, using a heating device to heat the heat transfer sleeve.
10. The method of claim 7, further comprising: repeating the steps (2) to (5) for a plurality of times so as to obtain the composite material winding reinforced steel cable with the preset length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281544.1A CN112323525A (en) | 2020-11-16 | 2020-11-16 | Composite material winding reinforced steel cable and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011281544.1A CN112323525A (en) | 2020-11-16 | 2020-11-16 | Composite material winding reinforced steel cable and manufacturing method thereof |
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