CN112482222A - Main cable strand with zinc-aluminum-magnesium alloy coating steel wire and assembling method thereof - Google Patents
Main cable strand with zinc-aluminum-magnesium alloy coating steel wire and assembling method thereof Download PDFInfo
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- CN112482222A CN112482222A CN202011275943.7A CN202011275943A CN112482222A CN 112482222 A CN112482222 A CN 112482222A CN 202011275943 A CN202011275943 A CN 202011275943A CN 112482222 A CN112482222 A CN 112482222A
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- steel wire
- anchorage device
- strand
- wire
- hole
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 138
- 239000010959 steel Substances 0.000 title claims abstract description 138
- -1 zinc-aluminum-magnesium Chemical compound 0.000 title claims abstract description 38
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 31
- 238000000576 coating method Methods 0.000 title claims description 32
- 239000011248 coating agent Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims description 17
- 238000007747 plating Methods 0.000 claims description 15
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 12
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 235000019270 ammonium chloride Nutrition 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000011592 zinc chloride Substances 0.000 claims description 6
- 235000005074 zinc chloride Nutrition 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 230000035882 stress Effects 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 238000011160 research Methods 0.000 description 1
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
Abstract
The main cable strand with the zinc-aluminum-magnesium alloy coated steel wire comprises a cable strand, a protective cover and an anchoring assembly. The anchoring component comprises an anchorage device, a wire separating plate, anchoring materials, reinforcing ribs and a cover plate. The center of the anchorage device is provided with an anchorage device hole which is communicated with the anchorage device. The wire separating plate comprises a body and wire separating holes. The body comprises an arc surface and a plane. The central axis of the wire dividing hole is perpendicular to the tangent line of the cambered surface, and the distance between the steel wire and the inlet is equal, so that the bending radian of the steel wire is reduced, each steel wire is uniformly stressed, stress concentration of the steel wire at the bending part is avoided, and the static load performance and the fatigue performance of the steel wire are improved. The anchoring material is cast in the anchoring hole, so that the steel wire, the wire dividing plate and the anchoring device are fixedly integrated, and the strength of the anchoring assembly is further improved.
Description
Technical Field
The invention relates to the technical field of suspension bridges, in particular to a main cable strand with a zinc-aluminum-magnesium alloy coating steel wire and an assembling method thereof.
Background
The suspension bridge is the most important bridge type in the world at present, and has the advantages of attractive appearance, strong spanning capability and the like. The main cable strand is the most main stressed member on the suspension bridge, and the load of all bridge decks needs to be borne by the main cable. Therefore, the performance of the main cable strand will be related to the service life of the bridge, the operation safety, etc.
In the prior art, the steel wire coating of the bridge cable is mainly a zinc coating, and in recent years, steel wires with a zinc-aluminum coating are used for part of bridges. The corrosion resistance of steel wires having a zinc-aluminum coating on the surface thereof was investigated 2 to 4 times as high as that of steel wires having a zinc coating on the surface thereof. With the recent technical development, steel wires for cables with zinc-aluminum-magnesium coatings on the surfaces begin to appear, and researches also show that the corrosion resistance of the steel wires with the zinc-aluminum-magnesium coatings is more than 3 times that of the steel wires with the zinc-aluminum coatings on the surfaces.
However, both the zinc-aluminum coated steel wire and the zinc-aluminum-magnesium coated steel wire have lower friction coefficients than the zinc-coated steel wire, and the low friction coefficient has a great influence on the anchoring performance of the anchors at both ends of the cable. The strength of the steel wire adopted by the main cable strand of the suspension bridge is generally below 2000MPa, and with the mature technology of the steel wire with the strength above 2000MPa, the main cable strand with the strength above 2000MPa is inevitably generated in order to improve the tensile strength of the main cable strand, but the anchoring force of the currently adopted zinc-copper alloy hot-cast anchor is difficult to meet the requirement of high strength, so that the application of the high-strength steel wire and the cable strand is limited, and the bearing capacity and the service life of the bridge are also reduced.
Disclosure of Invention
In view of the above, the present invention provides a main cable strand with a zinc-aluminum-magnesium alloy coated steel wire and an assembling method thereof, so as to solve the above technical problems.
A main cable strand with a zinc-aluminum-magnesium alloy coated steel wire comprises a strand and two anchoring assemblies arranged at two ends of the strand. The cable strand is formed by arranging and bundling a plurality of steel wires along the length direction of the steel wires, a zinc-magnesium-aluminum alloy coating is arranged on the outer side face of each steel wire, and the steel wires are fixed in the anchoring component after being cleaned by a solute prepared by mixing ammonium chloride, zinc chloride and sub-milling chloride according to the mass ratio of 4:3: 3. The anchoring assembly comprises an anchorage device arranged at one end of the strand, a wire splitting plate arranged on the anchorage device, an anchoring material arranged on the anchorage device, and at least two reinforcing ribs arranged on the anchorage device at intervals. The center of the anchorage device is provided with anchorage device holes which run through the anchorage device, and the steel wires at one end of the strand are dispersedly arranged in the anchorage device holes. The anchor aperture includes an inlet disposed at one end of the anchor and an outlet disposed at the other end of the anchor on an opposite side of the inlet. The wire dividing plate comprises a body arranged in the anchor hole and a plurality of wire dividing holes arranged on the body. The body is located between the inlet and the outlet. The body includes an arcuate surface facing the outlet and a flat surface on an opposite side of the arcuate surface and facing the inlet. The tangent line of the top end of the cambered surface is perpendicular to the central axis of the anchor hole, and the central axis of the wire dividing hole is perpendicular to the tangent line of the cambered surface. The steel wires extend into the anchorage device holes from the inlet, the steel wires are dispersed one by one after extending into the anchorage device holes, and each steel wire is respectively fixed in one wire dividing hole in a penetrating mode. The anchoring material is cast in the anchoring hole so as to fixedly combine the steel wire, the wire dividing plate and the anchoring device into a whole, and the reinforcing ribs are oppositely arranged on the inner wall of the anchoring device.
Furthermore, the main cable strand with the zinc-aluminum-magnesium alloy coating steel wire further comprises a protective cover coated outside the strand.
Further, the anchor assembly also includes a cover plate disposed over the outlet.
Further, the diameter of the inlet is 2-4 times of the diameter of the outlet.
Further, the thickness of the body is tapered from the center of the body in a radial direction thereof.
Further, a plurality of the filament dividing hole arrays are arranged on the body, and the distance between every two adjacent filament dividing holes is equal.
Furthermore, the part of the steel wire penetrating the wire dividing hole is pressed into a pier head, and the pier head is attached to the cambered surface.
A method for assembling a main cable strand with a zinc-aluminum-magnesium alloy coated steel wire comprises the following steps:
step S1: providing a plurality of steel wires and a protective cover, plating a zinc-magnesium-aluminum alloy coating on the outer side surface of each steel wire, detecting the tension of each steel wire to make the tension of each steel wire consistent, bundling and forming the steel wires to form a strand, cutting the strand to a fixed length according to the length requirement, and coating the protective cover on the outer side surface of the steel wire bundle;
step S2: mixing ammonium chloride, zinc chloride and sodium chloride in a mass ratio of 4:3:3 to prepare a solute, and dissolving the solute in water to prepare a solution of 400g/L, wherein the solution is the plating assistant solution. Cleaning the steel wires at two ends of the strand for 2-4 minutes by using the plating assistant solution at the temperature of 60-70 ℃, then cleaning the plating assistant solution on the strand by using clear water, and then placing two ends of the strand at a dark place for drying in the shade;
step S3: providing an anchoring assembly, wherein the anchoring assembly comprises an anchorage device arranged at one end of the strand, a wire splitting plate arranged on the anchorage device, an anchoring material arranged on the anchorage device, at least two reinforcing ribs arranged on the anchorage device, and a cover plate arranged on the anchorage device. The center of the anchorage device is provided with an anchorage device hole which is communicated with the anchorage device. The anchor hole includes an inlet disposed at one end of the anchor hole and an outlet disposed at the other end of the anchor hole. Respectively extending two ends of the strand into the anchorage holes from the entrance of the anchorage holes, and ensuring that the central axis of the strand is superposed with the central axis of the anchorage holes;
step S4: the wire dividing plate comprises a body arranged in the anchor hole and a plurality of wire dividing holes arranged on the body. Dispersing the steel wires in the anchor hole one by one, installing the wire dividing plate in the anchor, and respectively penetrating each steel wire into a plurality of wire dividing holes;
step S5: pressing the part of the steel wire penetrating out of the wire dividing hole to form an upset head;
step S6: preheating the anchorage hole of the anchorage device, casting the anchoring material in a molten state in the anchorage hole, then cooling the anchoring material under natural conditions to solidify the anchoring material, and finally sealing the cover plate in the outlet.
Further, preheating the temperature of the anchor hole to 135-145 ℃.
Further, the temperature of the anchoring material in a molten state is 450-470 ℃.
Compared with the prior art, the main cable strand with the zinc-aluminum-magnesium alloy coated steel wire provided by the invention is characterized in that the anchor and the wire dividing plate are designed, specifically, an anchor hole penetrating through the anchor is arranged at the center of the anchor, and the anchor hole comprises the inlet and the outlet which are arranged at two ends of the anchor hole. The wire dividing plate comprises a body arranged in the anchorage device hole and a plurality of wire dividing holes arranged on the body. The central axis of the wire dividing hole is perpendicular to the tangent line of the cambered surface, so that each wire dividing hole faces the inlet and the bending radian of the steel wire is reduced, and the distance from each steel wire to the inlet from the wire dividing plate is equal, so that the stress of each steel wire is uniform, the stress concentration of the steel wire at the bending part is avoided, and the static load performance and the fatigue performance of the steel wire are improved. After the steel wire is fixedly penetrated, the anchoring material is cast in the anchoring hole, and the two ends of the steel wire are cleaned by the plating assistant agent before casting, so that the steel wire, the wire dividing plate and the anchoring device are fixedly combined into a whole, and the strength of the anchoring assembly is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a main cable strand with a zinc-aluminum-magnesium alloy coated steel wire provided by the invention.
Fig. 2 is a schematic cross-sectional view of a main strand of the steel wire having a zn-al-mg alloy coating of fig. 1.
Fig. 3 is a cross-sectional view of the anchor assembly of the main cable strand having the zn-al-mg alloy coated steel wire of fig. 1.
Fig. 4 is a schematic cross-sectional view of a wire dividing plate of a main cable strand having a zinc-aluminum-magnesium alloy coated steel wire of fig. 1.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1 to 4, which are schematic structural views of a main cable strand with a zinc-aluminum-magnesium alloy coated steel wire provided by the present invention. The main cable strand with the zinc-aluminum-magnesium alloy coated steel wire comprises a strand 10, a protective cover 20 covering the strand 10, and two anchoring assemblies 30 arranged at two ends of the strand 10. It is contemplated that the main cable strand with the zn-al-mg alloy coated steel wire may further include other functional modules, such as a wrapping tape, a fire-proof layer, and a sealing component, etc., which are well known to those skilled in the art and will not be described herein again.
The cable strand 10 is a stressed member of a building structure such as a bridge, and is used for bearing and supporting the weight of a bridge deck. The strand 10 is formed by arranging and bundling a plurality of steel wires 11 in a longitudinal direction thereof. The number of the steel wires 11 is at least 7, and in the embodiment, the number of the steel wires 11 is 51. The cross section of the cable strand 10 is a regular hexagon. The two ends of the cable 10 are respectively arranged in the two anchoring assemblies 30, and the cable 10 is positioned between the two anchoring assemblies 20. The outer side surface of the steel wire 11 is provided with a zinc-magnesium-aluminum alloy coating, the thickness of the zinc-magnesium-aluminum alloy coating is more than or equal to 40 micrometers, and the steel wire 11 is fixed in the anchoring component 30 after being cleaned by a solute prepared by mixing ammonium chloride, zinc chloride and sub-mill chloride according to the mass ratio of 4:3: 3.
The protective cover 20 is coated on the outer side surface of the cable strand 10, the wrapping tape 10 is used for fixing the steel wire 11 and serves as an anti-corrosion sealing layer of the cable strand 10, so that the cable strand 10 has good ageing resistance. But is per se prior art and will not be described further herein.
The two anchoring assemblies 30 are respectively disposed at both ends of the strand 10 and are used to fix the strand 10 to a bridge. The two anchor assemblies 30 have the same composition, structure, and operation, and only one of the anchor assemblies 30 is illustrated here as an example. The anchoring assembly 30 includes an anchor 31 disposed at one end of the strand 10, a filament separating plate 32 disposed on the anchor 31, an anchoring material 33 disposed on the anchor 31, at least two reinforcing ribs 34 disposed at intervals on the anchor 31, and a cover plate 35 disposed on the anchor 31.
The center of the anchorage 31 is provided with anchorage holes 311 penetrating the anchorage 31, and the steel wires 11 at one end of the strand 10 are dispersedly arranged in the anchorage holes 311. The anchor hole 311 includes an inlet 3111 disposed at one end of the anchor 31, and an outlet 3112 disposed at the other end of the anchor 31 on the opposite side of the inlet 3111. The diameter of the inlet 3111 is 2-4 times of the diameter of the outlet 3112, and the anchor hole 311 is in a truncated cone shape and is trapezoidal in axial section along the anchor 31, so that the steel wire 11 is dispersed in the anchor hole 311 after extending from the inlet 3111. The entrance 3111 is directed towards the strand 10.
The wire dividing plate 32 includes a body 321 disposed in the anchor hole 311, and a plurality of wire dividing holes 322 disposed on the body 321. The body 321 is embedded and fixed in the anchor hole 311 and is located between the inlet 3111 and the outlet 3112. The body 321 includes an arc surface 3211 facing the outlet 3112, and a plane 3212 located on an opposite side of the arc surface 3211 and facing the inlet 3111, the body 321 is a disc-shaped convex structure, a thickness of the body 321 gradually decreases from a center of the body 321 along a radial direction thereof, and a minimum thickness of the body 321 is greater than or equal to 20 mm. The tangent line of the top end of the cambered surface 3211 is perpendicular to the central axis of the anchor hole 311. The wire dividing holes 322 are arranged on the body 321 in an array, and the distance between every two adjacent wire dividing holes 322 is equal, so that the stress of the wire dividing plate 32 is uniform, and the static load performance of the wire dividing plate 32 is improved. The number of the wire dividing holes 322 is the same as that of the steel wires 11, so that each steel wire 11 can be respectively fixed in each wire dividing hole 322 in a penetrating manner. The central axis of the wire dividing hole 322 is perpendicular to the tangent of the arc surface 3211, so that each wire dividing hole 322 faces the inlet 3111 and reduces the curvature of the steel wire 11, thereby facilitating the penetration of the steel wire 11 while avoiding stress concentration of the steel wire 11 at the bend. The steel wires 11 extend into the anchor hole 311 from the inlet 3111, the plurality of steel wires 11 are radially dispersed one by one after extending, each steel wire 11 respectively penetrates out of the wire dividing hole 322, the part of each steel wire 11 penetrating out of the wire dividing hole 322 is pressed into an upset head 322 by an upset head machine, and the upset head 322 is attached to the cambered surface 3211 of the wire dividing plate 32, so that the steel wires 11 are fixed on the wire dividing plate 32 through the upset head 322, and the anchoring performance between the steel wires 11 and the wire dividing plate 32 is further improved. The distance between each steel wire 11 and the inlet 3111 from the wire dividing plate 32 is equal, so that each steel wire 11 is uniformly stressed, and the static load performance and the fatigue performance of the steel wire 11 are improved.
The anchoring material 33 is cast in the anchor hole 311 after the steel wire 11 is fixed, so that the steel wire 11, the wire dividing plate 32 and the anchor 31 are fixed into a whole, and the strength of the anchoring assembly 30 is further improved. The anchoring material 33 is made of zinc-copper alloy.
The two reinforcing ribs 34 are oppositely arranged on the inner wall of the anchor hole 311 of the anchor 31, and the reinforcing ribs 34 are long-strip-shaped. The temperature of the anchoring material 33 is very high during casting, and when the anchoring material 33 is cooled and solidified, expansion with heat and contraction with cold can occur, so that a gap exists at the joint of the anchoring material 33 and the anchorage device 31, and the anchoring performance is further influenced. The reinforcing ribs 34 are used for preventing the anchoring material 33 from expanding with heat and contracting with cold when being cooled and solidified, so that the anchoring material 33 is tightly attached to the anchorage device 31.
The cover plate 35 is disposed in an outlet 3112 of the anchor bore 311, and the cover plate 35 is used to seal the anchor bore 311 and prevent water or debris from entering the anchor bore 311. Which is per se prior art and will not be described in further detail herein.
The invention also provides an assembly method of the main cable strand with the zinc-aluminum-magnesium alloy coating steel wire, which comprises the following steps:
step S1: providing a plurality of steel wires 11 and the protective cover 20, plating a zinc-magnesium-aluminum alloy plating layer on the outer side surface of each steel wire, and detecting the tension of each steel wire 11 to ensure that the tension of each steel wire 11 is consistent so as to ensure the manufacturing precision of the cable strand 10. Bundling and forming the steel wires 11 to form the strand 10, cutting the strand 10 to a fixed length according to the length requirement, and coating a protective cover 20 on the outer side surface of the steel wire bundle 10;
step S2: mixing ammonium chloride, zinc chloride and sodium chloride in a mass ratio of 4:3:3 to prepare a solute, and dissolving the solute in water to prepare a solution of 400g/L, wherein the solution is the plating assistant solution. Cleaning the steel wires 11 at the two ends of the strand 10 for 2-4 minutes by using the plating assistant solution at the temperature of 60-70 ℃, then cleaning the plating assistant solution on the strand 10 by using clear water, and then placing the two ends of the strand 10 in a dark place for drying in the shade;
step S3: providing the anchoring assembly 30, wherein the anchoring assembly 30 comprises an anchorage device 31 arranged at one end of the strand 10, a wire dividing plate 32 arranged on the anchorage device 31, an anchoring material 33 arranged on the anchorage device 31, at least two reinforcing ribs 34 arranged on the anchorage device 31, and a cover plate 35 arranged on the anchorage device 31. An anchorage hole 311 penetrating through the anchorage 31 is formed in the center of the anchorage 31. The anchor bore 311 includes an inlet 3111 disposed at one end of the anchor bore 311 and an outlet 3112 disposed at the other end of the anchor bore 311. Extending two ends of the strand 10 into the anchor hole 311 from the entrance 3111 of the anchor hole 311, respectively, and ensuring that the central axis of the strand 10 coincides with the central axis of the anchor hole 311;
step S4: the wire dividing plate 32 comprises a body 321 arranged in the anchor hole 311 and a plurality of wire dividing holes 322 arranged on the body 321, the steel wires 11 in the anchor hole 311 are dispersed one by one, the wire dividing plate 32 is arranged in the anchor 31, and each steel wire 11 is respectively arranged in the plurality of wire dividing holes 322 in a penetrating manner;
step S5: pressing the part of the steel wire 11 penetrating out of the wire dividing hole 322 to form an upset head 322;
step S6: preheating the anchor hole 311 of the anchor 31, casting the anchoring material 33 in a molten state in the anchor hole 311, then cooling the anchoring material 33 under natural conditions to solidify the anchoring material 33, and finally sealing the cover plate 35 in the outlet 3112.
In the step S6, the anchor holes 311 are preheated to a temperature of 135-145 ℃.
In the step S6, the temperature of the anchor 33 in a molten state is 450 to 470 ℃.
Compared with the prior art, the main cable strand with the zinc-aluminum-magnesium alloy coated steel wire provided by the invention is characterized in that the anchorage device 31 and the wire dividing plate 32 are designed, specifically, an anchorage device hole 311 penetrating through the anchorage device 31 is arranged at the center of the anchorage device 31, and the anchorage device hole 311 comprises the inlet 3111 and the outlet 3112 which are arranged at two ends of the anchorage device hole 311. The wire dividing plate 32 includes a body 321 disposed in the anchor hole 311, and a plurality of wire dividing holes 322 disposed on the body 321. The central axis of the wire dividing hole 322 is perpendicular to the tangent of the arc surface 3211, so that each wire dividing hole 322 faces the entrance 3111 and reduces the curvature of the steel wire 11, and the distance between each steel wire 11 and the entrance 3111 from the wire dividing plate 32 is equal, so that the stress of each steel wire 11 is uniform, the stress concentration of the steel wire 11 at the bending position is avoided, and the static load performance and the fatigue performance of the steel wire 11 are improved. After the steel wire 11 is fixedly penetrated, the anchoring material 33 is cast in the anchor hole 311, and before casting, both ends of the steel wire 11 are cleaned by the plating assistant agent, so that the steel wire 11, the wire dividing plate 32 and the anchor 31 are fixedly combined into a whole, and the strength of the anchoring assembly 30 is further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.
Claims (10)
1. The utility model provides a main push-towing rope strand with zinc-aluminum-magnesium alloy cladding material steel wire which characterized in that: the main cable strand with the zinc-aluminum-magnesium alloy coated steel wires comprises a strand and two anchoring components arranged at two ends of the strand, wherein the strand is formed by arranging and bundling a plurality of steel wires along the length direction of the strand, a zinc-aluminum-magnesium alloy coating is arranged on the outer side surface of each steel wire, each steel wire is fixed in each anchoring component after being cleaned by a solute prepared by mixing ammonium chloride, zinc chloride and chiffon in a mass ratio of 4:3:3, each anchoring component comprises an anchorage device arranged at one end of the strand, a wire separating plate arranged on the anchorage device, an anchoring material arranged on the anchorage device and at least two reinforcing ribs arranged on the anchorage device at intervals, an anchorage device hole penetrating through the anchorage device is arranged at the center of the anchorage device, the steel wires at one end of the strand are dispersedly arranged in the anchorage device hole, and each anchorage device hole comprises an inlet arranged at one end of the anchorage device, and an outlet disposed at the other end of the anchor and located at the opposite side of the inlet, wherein the filament dividing plate comprises a body disposed in the anchor hole, and a plurality of filament dividing holes disposed on the body, the body is located between the inlet and the outlet, the body comprises an arc surface facing the outlet, and a plane located at the opposite side of the arc surface and facing the inlet, a tangent line at the top end of the arc surface is perpendicular to a central axis of the anchor hole, a central axis of the filament dividing hole is perpendicular to a tangent line of the arc surface, the steel filaments extend into the anchor hole from the inlet, the plurality of steel filaments are dispersed one by one after extending, each steel filament is respectively inserted and fixed in one of the filament dividing holes, the anchoring material is cast in the anchor hole to fixedly integrate the steel filaments, the filament dividing plate and the anchor, the reinforcing ribs are oppositely arranged on the inner wall of the anchorage device.
2. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: the main cable strand with the zinc-aluminum-magnesium alloy coating steel wire further comprises a protective cover wrapping the strand.
3. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: the anchor assembly also includes a cover plate disposed over the outlet.
4. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: the diameter of the inlet is 2-4 times of the diameter of the outlet.
5. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: the thickness of the body is tapered from the center of the body in a radial direction thereof.
6. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: the filament dividing holes are arranged on the body in an array mode, and the distance between every two adjacent filament dividing holes is equal.
7. The main cable strand of steel wire having a zinc-aluminum-magnesium alloy coating according to claim 1, wherein: and pressing the part of the steel wire penetrating the wire dividing hole into a pier head, wherein the pier head is attached to the cambered surface.
8. A method for assembling a main cable strand with a zinc-aluminum-magnesium alloy coated steel wire comprises the following steps:
step S1: providing a plurality of steel wires and a protective cover, plating a zinc-magnesium-aluminum alloy coating on the outer side surface of each steel wire, detecting the tension of each steel wire to make the tension of each steel wire consistent, bundling and forming the steel wires to form a strand, cutting the strand to a fixed length according to the length requirement, and coating the protective cover on the outer side surface of the steel wire bundle;
step S2: mixing ammonium chloride, zinc chloride and sub-milling chloride according to a mass ratio of 4:3:3 to prepare a solute, dissolving the solute in water to prepare a solution of 400g/L, wherein the solution is an auxiliary plating solution, washing the steel wires at two ends of the cable strand for 2-4 minutes by using the auxiliary plating solution at a temperature of 60-70 ℃, then washing the auxiliary plating solution on the cable strand by using clear water, and then placing two ends of the cable strand in a dark place for drying in the shade;
step S3: providing an anchoring assembly, wherein the anchoring assembly comprises an anchorage device arranged at one end of each strand, a wire splitting plate arranged on the anchorage device, an anchoring material arranged on the anchorage device, at least two reinforcing ribs arranged on the anchorage device, and a cover plate arranged on the anchorage device, an anchorage device hole penetrating through the anchorage device is arranged at the center of the anchorage device, the anchorage device hole comprises an inlet arranged at one end of the anchorage device hole and an outlet arranged at the other end of the anchorage device hole, two ends of each strand respectively extend into the anchorage device hole from the inlet of the anchorage device hole, and the central axis of each strand is ensured to be coincident with the central axis of the anchorage device hole;
step S4: the wire dividing plate comprises a body arranged in the anchorage device hole and a plurality of wire dividing holes arranged on the body, the steel wires in the anchorage device hole are dispersed one by one, the wire dividing plate is arranged in the anchorage device, and each steel wire is respectively arranged in the wire dividing holes in a penetrating manner;
step S5: pressing the part of the steel wire penetrating out of the wire dividing hole to form an upset head;
step S6: preheating the anchorage hole of the anchorage device, casting the anchoring material in a molten state in the anchorage hole, then cooling the anchoring material under natural conditions to solidify the anchoring material, and finally sealing the cover plate in the outlet.
9. The method for assembling a main cable strand of a steel wire having a zinc-aluminum-magnesium alloy coating according to claim 8, wherein: and preheating the anchor hole to 135-145 ℃.
10. The method for assembling a main cable strand of a steel wire having a zinc-aluminum-magnesium alloy coating according to claim 8, wherein: the temperature of the anchoring material in a molten state is 450-470 ℃.
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Cited By (1)
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Application publication date: 20210312 |