CN113279330A - Gas-phase corrosion-resistant cable body and gas-phase corrosion-resistant steel strand inhaul cable - Google Patents

Abstract

The invention provides a gas-phase anti-corrosion cable body and a gas-phase anti-corrosion steel strand inhaul cable, wherein the gas-phase anti-corrosion cable body comprises steel wires, a wrapping tape and a plastic sheath, a plurality of steel wires are twisted into steel strands, a plurality of steel strands are combined in a certain arrangement to form a cable strand, the wrapping tape is wound on the outer surface of the cable strand, the plastic sheath is sleeved on the outer surface of the wrapping tape, the steel strands at two ends are exposed outside, and a gas-phase corrosion inhibition material is placed in the plastic sheath. The invention has the beneficial effects that: 1. the invention has clear anticorrosion mechanism, mature and reliable technology, simple and convenient measure, and convenient replacement and implementation; 2. the invention can naturally compensate the steel wire damage or the steel wire coating damage in the cable making process and the corrosion prevention caused by the wet air in the cable body; 3. the invention can improve the inevitable corrosion condition due to the structure characteristics, and can achieve full-section omnibearing corrosion prevention; 4. based on the existing inhaul cable body anticorrosion technology, the anticorrosion durability of the inhaul cable body is prolonged through gas phase corrosion inhibition and anticorrosion.

Description

Gas-phase corrosion-resistant cable body and gas-phase corrosion-resistant steel strand inhaul cable

Technical Field

The invention relates to the field of bridge construction, in particular to a gas-phase corrosion-resistant cable body and a gas-phase corrosion-resistant steel strand inhaul cable.

Background

A steel strand inhaul cable of a cable-stayed bridge comprises a cable body and an anchorage device. The cable body comprises the following components from inside to outside: the steel wire with the surface plated with zinc or coated with epoxy resin is twisted into a bundle according to requirements, finally the steel wire is braided into a strand, and then a plastic sheath is arranged on the strand to form a rope body. When the bridge is constructed, plastic sheath pipes are arranged outside the cable strands to protect the cable strands and the anchor heads. Although the steel wire surface is galvanized or epoxy-coated and the outer layer is provided with two layers of plastic protection, the following conditions are inevitable:

1) the galvanized or epoxy sprayed steel wire is inevitably scratched locally by a zinc coating or a resin coating during the process of producing the cable, so that the protection capability is reduced;

2) the galvanized or epoxy sprayed steel wire has insufficient thickness and uneven thickness, and the plating and coating have the defects of cracks, pinholes and the like to cause the reduction of the corrosion resistance.

3) When the cable is manufactured or the cable is threaded in bridge construction, the plastic layer is damaged, the anticorrosion effect is influenced, and the anticorrosion capability is reduced.

4) Gaps exist between the steel wires in the process of making the cables, and the gaps are filled with moisture contained in the air and exist for a long time, so that the steel wires are corroded; secondly, when the external temperature changes, the gaps of the steel wires are expanded with heat and contracted with cold to exchange air, and bring moisture or various corrosive media into the gaps, so that the steel wires are corroded.

5) The stay cable anchorage is a steel part stress structure which transmits the stay cable force to a bridge body or a bridge tower. The surface of the prior anchor is galvanized or zincified to prevent corrosion in a corrosion prevention mode (1); (2) painting and corrosion prevention are carried out on the exposed part after the installation is finished; (3) smearing antirust grease; (4) filling the cable guide pipe with filler. However, the use effect of these anticorrosion structures in practical engineering is often unsatisfactory, and the anticorrosion structures become one of serious disaster areas of cable corrosion diseases, mainly because:

A. the galvanization corrosion resistance is limited, the durability is insufficient, and in addition, the coating is partially scratched in the installation process, so that the protection capability is reduced;

B. the modes of paint repair and coating of anticorrosion grease on the exposed part can only be local anticorrosion, cannot solve the anticorrosion durability of the whole anchorage device, and cannot prevent the corrosion of steel wires in the anchorage device;

C. when the deviation of the embedded part, the aging and cracking of the structure, the performance degradation and the elasticity reduction and the sealing performance of the waterproof cover of the anchorage device are insufficient, water can permeate into the anchorage device to accelerate the corrosion of the anchorage device and also cause the corrosion of the steel wire of the cable body;

D. filling materials are poured into the cable guide pipe, so that the troubles are brought to later inspection, maintenance and replacement, gaps are generated between the anchor or the cable body and the filling materials due to the filling materials, rainwater with poor sealing of the waterproof cover can still infiltrate, and the corrosion of the anchor and the cable body steel strand or steel wire is caused;

E. the gap in the anchorage device is large, and when the anchorage device expands with heat and contracts with cold, the inside and outside air exchange brings in moisture vapor, so that the steel structure in the anchorage device and the steel wires of the cable body are corroded.

Disclosure of Invention

The invention provides a gas-phase anticorrosion cable body which comprises steel wires, a cable band and a plastic sheath, wherein a plurality of steel wires are twisted into steel strands, a plurality of steel strands are arranged and combined in a certain way to be braided into a cable strand, the cable band is wound on the outer surface of the cable strand, the plastic sheath is sleeved on the outer surface of the cable band, the steel strands at two ends are exposed outside, and a gas-phase corrosion inhibition material is placed in the plastic sheath.

As a further improvement of the invention, the vapor phase corrosion inhibition material is a vapor phase antirust agent, and the vapor phase antirust agent is coated on the outer surface of the cable strand.

As a further improvement of the invention, the vapor phase corrosion inhibition material is a vapor phase antirust belt, the vapor phase antirust belt is wound on the outer surface of the cable strand, and the wrapping belt wraps the vapor phase antirust belt; or the gas-phase antirust belt and the belt are integrally formed.

As a further improvement of the present invention, the vapor phase corrosion inhibition material further includes a vapor phase rust-preventive tape wound around the outer surface of the strand, and the vapor phase rust-preventive agent is located between the outer surface of the strand and the inner surface of the vapor phase rust-preventive tape.

As a further improvement of the invention, the gas-phase anticorrosion cable body also comprises a protective sleeve, the gas-phase corrosion inhibition material comprises gas-phase antirust lubricating grease, the gas-phase antirust lubricating grease is coated on the outer surface of the steel stranded wires, the protective sleeve wraps the steel stranded wires, and a plurality of steel stranded wires with the protective sleeve are braided in a certain arrangement and combination to form a cable strand.

As a further improvement of the invention, the vapor phase corrosion inhibition material also comprises a vapor phase antirust agent, and the vapor phase antirust agent is coated on the outer surface of the steel wire.

As a further improvement of the invention, the protective sleeve is doped with a vapor phase corrosion inhibitor to form a vapor phase corrosion inhibition protective sleeve.

As a further improvement of the invention, the plastic sheath comprises an inner sheath and an outer sheath wrapping the inner sheath, and the inner sheath wraps the belting.

As a further improvement of the invention, a vapour phase corrosion inhibitor is incorporated into the inner sheath to form an inner vapour phase corrosion inhibiting sheath and/or a vapour phase corrosion inhibitor is incorporated into the outer sheath to form an outer vapour phase corrosion inhibiting sheath.

The invention also discloses a gas-phase corrosion-resistant steel strand inhaul cable which comprises the gas-phase corrosion-resistant cable body, an end plate, an anchoring sleeve and a first sealing cylinder, wherein the first sealing cylinder and the anchoring sleeve are respectively sequentially arranged at two ends of the gas-phase corrosion-resistant cable body, the end plate is arranged at the top end of the anchoring sleeve, the end plate, the anchoring sleeve, the first sealing cylinder and the end part of the gas-phase corrosion-resistant cable body form a closed space, and a gas-phase corrosion inhibitor is filled in the closed space; the end parts of two ends of the gas-phase anticorrosion cable body are provided with the exposed metal stranded wires, the metal stranded wires respectively penetrate through the first sealing cylinder and the anchoring sleeve in sequence, and the metal stranded wires are coated with a gas-phase corrosion inhibitor.

As a further improvement of the invention, the gas-phase corrosion-resistant steel strand inhaul cable further comprises a nut, a spherical base plate, a first anchor base plate, a first pre-buried pipe, a protective cover, a first shock absorber and a first waterproof cover, wherein the first pre-buried pipe is installed in concrete, the end part of the gas-phase corrosion-resistant cable body is sequentially inserted into the first pre-buried pipe and the first anchor base plate and then is installed in the spherical base plate and the nut, the protective cover is installed at the end part of the gas-phase corrosion-resistant cable body, and an antirust agent is placed in a closed space formed by the protective cover and the end part of the gas-phase corrosion-resistant cable body; the first shock absorber is arranged in a gap between the embedded pipe and the gas-phase anti-corrosion cable body, and the gas-phase corrosion inhibitor is placed in a closed space formed by the first embedded pipe, the gas-phase anti-corrosion cable body and the first shock absorber; the first waterproof cover is arranged between the first embedded pipe and the gas-phase anticorrosion cable body.

The invention also discloses a clamping piece type gas phase corrosion inhibition extrusion inhaul cable which comprises the gas phase corrosion prevention inhaul cable body, a second embedded pipe, an anchor plate, a clamping piece, a cable hoop, a second shock absorber, a second anchor backing plate, a sealing device and an anchor head protection cover, wherein the second embedded pipe is arranged in concrete; the steel strand wire at the end part of the gas-phase anti-corrosion cable body sequentially penetrates into the second embedded pipe, the second anchor backing plate and the anchor plate, and the clamping piece is arranged between the steel strand wire and the anchor plate; the sealing device is arranged at the front end part of the gas-phase anticorrosion cable body, which is positioned in the second embedded pipe; the second shock absorber and the cable hoop are respectively arranged between the second embedded pipe and the gas-phase anti-corrosion cable body, and the gas-phase corrosion inhibiting material is filled in a gap between the second embedded pipe and the gas-phase anti-corrosion cable body; the end part of the gas-phase corrosion-resistant cable body is provided with the anchor head protective cover, and the enclosed space formed by the anchor head protective cover and the end part of the gas-phase corrosion-resistant cable body is filled with the gas-phase corrosion-inhibiting material.

As a further improvement of the invention, the clip type vapor phase corrosion inhibition extruded stay cable further comprises a second waterproof cover, wherein the second waterproof cover is arranged between the second embedded pipe and the vapor phase corrosion prevention cable body, the second waterproof cover, the cable hoop and the vapor phase corrosion prevention cable body form a sealed space, and the sealed space is filled with the vapor phase corrosion inhibition material; the sealing device comprises a second sealing cylinder and a sealing cylinder sealing device, and the bottom of the second sealing cylinder is arranged on the sealing cylinder sealing device; the clamping piece type gas phase corrosion inhibition extrusion inhaul cable further comprises a locking device, and the locking device is used for fixing the exposed fixed steel strand on the anchor plate.

The invention also discloses a construction method based on the non-finished product cable body, which comprises the following steps:

step 1: the plastic master batches are taken as raw materials and are hot extruded into the plastic protective sleeve on a plastic extruder, or the plastic protective sleeve with the vapor phase corrosion inhibition function is hot extruded on the plastic extruder by taking the plastic master batches doped with the vapor phase corrosion inhibitor in different proportions as raw materials.

Step 2: and (5) transporting the single stranded steel wires and the protective sleeves to an engineering site.

And step 3: after a plurality of bundles of steel strands penetrate through a plurality of protective sleeve pipes, the steel strands at the end part of the gas-phase corrosion-resistant cable body penetrate through the embedded pipe and the sealing cylinder sealing device to enter the sealing cylinder and then penetrate through the anchor plate, and then the steel strands are hooped into strands at the upper end of the embedded pipe by using cable hoops.

And 4, step 4: adding a vapor phase inhibitor into the sealed cylinder.

And 5: and then the nut is arranged on the sealing cylinder and is pre-tightened, and then the anchor plate and the clamping piece are installed.

Step 6: and after the anchoring and tensioning are finished, releasing the vapor phase corrosion inhibitor to the embedded pipes at the two ends.

And 7: and the pre-buried conduit sealing device, the shock absorber and the waterproof cover are respectively installed.

And 8: and applying a vapor phase corrosion inhibitor between the protective sleeve and the vapor phase corrosion prevention cable body.

And step 9: splicing and welding the protective sleeve into a whole.

Step 10: after the completion, the cable body anchorage device, the pre-embedded guide pipe and the sealing device form a closed space, the steel strand and the plastic sheath pipe form a closed space, and the vapor phase corrosion inhibitor is filled in each position in the closed space through molecular motion, so that the cable has long-acting corrosion resistance in all directions.

The invention has the beneficial effects that: 1. the invention has clear anticorrosion mechanism, mature and reliable technology, simple and convenient measure, and convenient replacement and implementation; 2. the invention can naturally compensate the steel wire damage or the steel wire coating damage in the cable making process and the corrosion prevention caused by the wet air in the cable body; 3. the invention can improve the inevitable corrosion condition due to the structure characteristics, and can achieve full-section omnibearing corrosion prevention; 4. the invention prolongs the corrosion resistance durability of the stay cable body through gas phase corrosion inhibition and corrosion prevention on the basis of the existing stay cable body corrosion prevention technology; 5. the invention has low input cost and high social and economic benefits.

Drawings

FIG. 1 is a view showing the structure of a first embodiment of a gas phase corrosion preventing cable body according to the present invention;

FIG. 2 is a structural view of a second embodiment of the gas phase corrosion protection cable body of the present invention;

FIG. 3 is a view showing the structure of a third embodiment of the gas phase corrosion preventing cable body according to the present invention;

FIG. 4 is a view showing the structure of a fourth embodiment of the gas phase corrosion preventing cable body according to the present invention;

FIG. 5 is a schematic view of a fifth embodiment of the gas phase corrosion protection cable body of the present invention;

FIG. 6 is a view showing the structure of a sixth embodiment of the gas phase corrosion preventing cable body according to the present invention;

FIG. 7 is a schematic view of a seventh embodiment of the gas phase corrosion protection cable body of the present invention;

FIG. 8 is a view showing the construction of an eighth embodiment of the gas phase corrosion preventing cable body according to the present invention;

FIG. 9 is a view showing the structure of a ninth embodiment of the gas phase corrosion preventing cable body according to the present invention;

FIG. 10 is a structural diagram of a finished product gas phase corrosion inhibition extrusion inhaul cable;

FIG. 11 is a gas phase corrosion inhibition field implementation diagram of an extrusion cable engineering field;

FIG. 12 is a view showing the structure of a clip type vapor phase corrosion inhibition extrusion cable;

FIG. 13 is a schematic diagram of the construction method of the present invention based on non-finished cable.

Detailed Description

The invention discloses a gas phase corrosion-proof steel strand inhaul cable which consists of a gas phase corrosion-proof cable body and a gas phase corrosion-proof anchorage device, and is respectively connected with a beam body and a bridge tower to bear and transfer the stress of the bridge. The gas-phase corrosion-prevention steel strand inhaul cable is formed by adding a gas-phase corrosion inhibitor in an inhaul cable structure, so that the inhaul cable has gas-phase corrosion inhibition capability. The principle is that the vapor phase corrosion inhibitor volatilizes corrosion inhibiting groups, and the corrosion inhibiting groups are attached to the surface of metal to form an anticorrosive protective film through volatilization, diffusion and contact effects, so that electrons are blocked from moving from an anode to a cathode, and the occurrence of corrosion electrochemical reaction and corrosion chemical reaction is inhibited; the corrosion inhibition group protective film can further obstruct the corrosion of metal corrosion medium, thereby achieving the purpose of long-acting corrosion prevention. When water or vapor exists in the inhaul cable, the vapor phase inhibitor is also dissolved in the water to form a corrosion inhibition group to play a role in corrosion prevention.

The steel wires used in the gas-phase anticorrosion cable body 100 are smooth wires (without protection), epoxy coating steel wires or galvanized steel wires, the steel wires are twisted to form a bundle, a plurality of steel strands are combined in a certain arrangement to be braided into a cable strand, the cable strand is protected by a plastic sheath to form a cable body, and the finished cable body is further twisted at a certain angle after being braided, wound with a wrapping tape and then subjected to hot extrusion of the plastic sheath. The gas phase corrosion-proof cable body is formed by applying gas phase corrosion inhibitor in different modes in the process of twisting steel wires and braiding and making cables.

The invention discloses a gas-phase anti-corrosion cable body 100 which comprises steel wires 1, a cable belt 4 and a plastic sheath 5, wherein a plurality of steel wires 1 are twisted into steel strands 2, a plurality of steel strands 2 are arranged and combined in a certain way to form a cable strand 3, the outer surface of the cable strand 3 is wound on the cable belt 4, the plastic sheath 5 is sleeved on the outer surface of the cable belt 4, the steel strands 2 at two ends are exposed outside, and a gas-phase corrosion inhibition material is placed in the plastic sheath 5.

As a first example of the vapor phase corrosion inhibiting cable body, as shown in fig. 1, the vapor phase corrosion inhibiting material is a vapor phase rust inhibitor, and the vapor phase rust inhibitor is coated on the outer surface of the cable strand 3.

The manufacturing method of this first embodiment is as follows:

step 1: preparing a gas phase corrosion inhibitor and a carrier into a gas phase antirust agent according to different proportions (weight ratio or volume ratio) according to the requirement of the corrosion prevention service life;

step 2: a plurality of steel wires 1 are twisted into a single-bundle steel strand 2 by a rope twisting machine in a specific arrangement, wherein the number of the steel wires 1 is usually 7 but not limited to 7;

and step 3: weaving a plurality of bundles of steel stranded wires 2 in a certain arrangement and combination to form a strand 3;

and 4, step 4: coating a layer of gas-phase rust inhibitor on the surface of the steel wire during rope weaving;

and 5: winding a wrapping tape 4 on the antirust agent after the braided rope is stranded;

step 6: carrying out hot extrusion on the whole cable strand on a plastic extruder by taking the plastic master batch as a raw material to form a plastic sheath 5, so as to prepare a finished cable body of the inhaul cable with a gas phase corrosion inhibition function;

and 7: and stripping a section of plastic and a wrapping tape 4 with proper length at two ends of the gas-phase corrosion-resistant cable body 100 to expose the steel strand 2 for assembling and manufacturing with the anchorage device.

As shown in fig. 2, as a second embodiment of the vapor phase corrosion-inhibiting cable body, the vapor phase corrosion-inhibiting material is a vapor phase rust-inhibiting tape 6, and the vapor phase rust-inhibiting tape 6 is wound around the outer surface of the cable strand 3. The second embodiment is different from the manufacturing method of the first embodiment in that a gas phase rust inhibitive belt 6 is used instead of a gas phase rust inhibitive agent.

As shown in fig. 3, as a third embodiment of the vapor phase corrosion inhibitor cable body, in addition to the first embodiment, the vapor phase corrosion inhibitor material further includes a vapor phase rust inhibiting tape 6, the vapor phase rust inhibiting tape 6 is wound around the outer surface of the cable strand 3, and the vapor phase rust inhibitor is located between the outer surface of the cable strand 3 and the inner surface of the vapor phase rust inhibiting tape 6.

As shown in fig. 4, as a fourth embodiment of the vapor phase corrosion inhibitor, in addition to the first embodiment, the vapor phase corrosion inhibitor further includes a vapor phase rust-proof band 6, and the vapor phase rust-proof band 6 is integrally formed with the wrapping band 4.

As shown in fig. 5 and 6, as the fifth and sixth embodiments of the gas-phase corrosion-resistant cable body, the plastic sheath 5 includes an inner sheath 51 and an outer sheath 52 wrapping the inner sheath 51, and the inner sheath 51 wraps the belting 4; the inner sheath 51 is doped with a vapor phase corrosion inhibitor to form an inner vapor phase corrosion inhibiting sheath 511 and/or the outer sheath 52 is doped with a vapor phase corrosion inhibitor to form an outer vapor phase corrosion inhibiting sheath 521.

As shown in fig. 7, as a seventh embodiment of the gas-phase corrosion-resistant cable body, the gas-phase corrosion-resistant cable body further includes a protective sheath 7, the gas-phase corrosion-resistant material includes a gas-phase rust-resistant lubricating grease, the gas-phase rust-resistant lubricating grease is coated on the outer surface of the steel strand 2, the protective sheath 7 wraps the steel strand 2, a plurality of bundles of the steel strands 2 having the protective sheath 7 are braided in a certain arrangement and combination to form a strand 3, the outer surface of the strand 3 is wound around the wrapping tape 4, and the outer surface of the wrapping tape 4 is wrapped with the plastic sheath 5.

As shown in fig. 8, an eighth embodiment of a vapor phase corrosion inhibitor is different from the seventh embodiment in that the vapor phase corrosion inhibitor further includes a vapor phase rust inhibitor applied to the outer surface of the steel wire 1.

As shown in fig. 9, as a ninth embodiment of the vapor phase corrosion-inhibiting liner, the ninth embodiment is different from the eighth embodiment in that a vapor phase corrosion inhibitor is incorporated into the protective sheath 7 to form a vapor phase corrosion-inhibiting protective sheath 71.

As shown in fig. 10, the invention further discloses a gas phase corrosion-proof steel strand inhaul cable, which comprises the gas phase corrosion-proof cable body 100, an end plate 13, an anchoring sleeve 14 and a first sealing cylinder 15, wherein the first sealing cylinder 15 and the anchoring sleeve 14 are respectively and sequentially installed at two ends of the gas phase corrosion-proof cable body 100, the end plate 13 is installed at the top end of the anchoring sleeve 14, the end plate 13, the anchoring sleeve 14, the first sealing cylinder 15 and the end part of the gas phase corrosion-proof cable body 100 form a closed space, and a gas phase corrosion inhibitor is filled in the closed space; the end parts of the two ends of the gas-phase corrosion-resistant cable body 100 are provided with the exposed steel strand wires 2, the steel strand wires 2 respectively penetrate through the first sealing cylinder 15 and the anchoring sleeve 14 in sequence, and the steel strand wires 2 are coated with a gas-phase corrosion inhibitor.

The gas-phase corrosion-resistant strand inhaul cable is manufactured by the gas-phase corrosion-resistant cable body 100 and an extrusion anchorage device in a workshop, and the manufacturing of the gas-phase corrosion-resistant strand inhaul cable comprises the following steps:

A. the end of the gas-phase corrosion-resistant cable body 100 sequentially passes through the first sealing cylinder 15 and the anchoring sleeve 14;

B. coating a gas-phase rust inhibitor on the surface of the exposed steel strand 2;

C. after the exposed steel strand 2 is in the correct position of the anchoring sleeve 14, extruding and anchoring by extrusion equipment;

D. c, extruding the exposed steel strand 2 at the rear end of the anchoring sleeve 14, applying the corrosion inhibitor again, and connecting and sealing the first sealing barrel 15 and the anchoring sleeve 14 through threads;

E. after the process is finished, the whole cross section of the stay cable steel strand is sealed in a sealed space formed by the anchoring sleeve 14, the first sealing cylinder 15 and the cable body plastic, and the vapor phase corrosion inhibitor fills each position in the sealed space through molecular motion, so that the all-round long-acting corrosion prevention of the whole cross section of the vapor phase corrosion-proof cable body 100 is achieved.

The above embodiment is implemented in a factory, in order to exert a more comprehensive and longer protection effect on the inhaul cable, make up for the corrosion prevention defect caused by the installation and construction of the real bridge, the following construction needs to be carried out on the engineering site for supplement:

after the anchor head penetrates through the embedded pipe and the anchor backing plate, the anchor head is installed into the spherical backing plate 17 and the nut 16, after anchoring and tensioning are finished, whether water is accumulated in the first embedded guide pipe 19 or not is checked, hot air drying is carried out after water is drained, a quantitative gas phase corrosion inhibitor is added after drying is finished, the first shock absorber 22 is installed, and finally the space gap between the end part of the cable guide pipe and the cable body is sealed by a guide pipe sealing device and the first waterproof cover 23 is installed. After tensioning is finished, applying the vapor phase corrosion inhibitor to the exposed anchor head, and then installing the protective cover 21 for sealing. After the completion, the cable body anchorage, the first pre-buried guide pipe 19 and the sealing device form a closed space, and the vapor phase corrosion inhibitor is filled in each position in the closed space through molecular motion, so that long-acting corrosion prevention of the cable body anchorage is achieved.

As shown in fig. 11, the vapor corrosion-resistant stranded wire inhaul cable further includes a nut 16, a spherical pad 17, a first anchor pad 18, a first embedded pipe 19, a protective cover 21, and a first damper 22, wherein the first embedded pipe 19 is installed in concrete, the end of the vapor corrosion-resistant cable body 100 is inserted into the spherical pad 17 and the nut 16 after sequentially penetrating the first embedded pipe 19 and the first anchor pad 18, the protective cover 21 is installed at the end of the vapor corrosion-resistant cable body 100, and a vapor corrosion inhibitor is placed in a closed space formed by the protective cover 21 and the end of the vapor corrosion-resistant cable body 100; the first damper 22 is installed in the gap between the embedded pipe 19 and the gas-phase corrosion-resistant cable body 100, and the gas-phase corrosion inhibitor is placed in the closed space formed by the first embedded pipe 19, the gas-phase corrosion-resistant cable body 100 and the first damper 22.

As shown in fig. 12, the invention further discloses a clip type vapor phase corrosion inhibition extrusion cable, which comprises the vapor phase corrosion prevention cable body 100, a second embedded pipe 23, an anchor plate 24, a clip 25, a cable hoop 26, a second damper 27, a second anchor backing plate 28, a sealing device and an anchor head protecting cover 36, wherein the second embedded pipe 23 is installed in concrete, the exposed steel strand 2 is arranged at the end of the vapor phase corrosion prevention cable body 100, the vapor phase corrosion prevention cable body 100 is installed in the second embedded pipe 23, and the end of the vapor phase corrosion prevention cable body 100 extends out of the second embedded pipe 23; the steel strand 2 at the end of the gas-phase corrosion-resistant cable body 100 sequentially penetrates through the second embedded pipe 23, the second anchor backing plate 28 and the anchor plate 24, and the clamping piece 25 is arranged between the steel strand 2 and the anchor plate 24; the sealing device is installed at the front end part of the gas-phase anticorrosion cable body 100 positioned in the second embedded pipe 23; the second damper 27 and the cable hoop 26 are respectively installed between the second embedded pipe 23 and the gas-phase anticorrosion cable body 100, and the gap between the second embedded pipe 23 and the gas-phase anticorrosion cable body 100 is filled with the gas-phase corrosion inhibitor; the end part of the gas-phase corrosion-resistant cable body 100 is provided with the anchor head protective cover 36, and a closed space formed by the anchor head protective cover 36 and the end part of the gas-phase corrosion-resistant cable body 100 is filled with the gas-phase corrosion inhibitor.

The clip type gas phase corrosion inhibition extrusion inhaul cable also comprises a second waterproof cover 33, wherein the second waterproof cover 33 is arranged between the second embedded pipe 23 and the gas phase corrosion prevention cable body 100, the second waterproof cover 33, the cable hoop 26 and the gas phase corrosion prevention cable body 100 form a sealed space, and the sealed space is filled with the gas phase corrosion inhibition material; the sealing device comprises a second sealing cylinder 34 and a sealing cylinder sealing device 35, wherein the bottom of the second sealing cylinder 34 is mounted on the sealing cylinder sealing device 35; the clip type gas phase corrosion inhibition extrusion inhaul cable also comprises a locking device 37, wherein the locking device 37 is used for fixing the exposed fixed steel strand 2 on the anchor plate 24.

The manufacturing method of the clip type gas phase corrosion inhibition extrusion inhaul cable comprises the following steps:

A. the steel strand at the end part of the gas-phase anti-corrosion cable body 100 passes through the pre-buried pipe and then passes through the extension cylinder sealing device to enter the extension cylinder and the supporting cylinder;

B. adding a vapor phase corrosion inhibitor into the supporting cylinder;

C. then mounting a nut on the supporting cylinder and pre-tightening, and then mounting an anchor plate and a clamping piece;

D. after anchoring and tensioning are finished, releasing a gas phase corrosion inhibitor to the embedded pipes at the two ends;

E. and the pre-buried conduit sealing device, the shock absorber and the waterproof cover are respectively installed.

F. After the completion, the cable body anchorage, the pre-embedded guide pipe and the sealing device form a closed space, and the vapor phase corrosion inhibitor is filled in each position in the closed space through molecular motion, so that the long-acting corrosion prevention of the cable body anchorage is realized.

As shown in fig. 13, the invention also discloses a construction method based on the non-finished cable body, which comprises the following steps:

step 1: the plastic master batch is used as a raw material and is hot extruded into the plastic protective sleeve on a plastic extruder. The plastic master batches doped with the vapor phase corrosion inhibitor in different proportions are used as raw materials in the plastic master batches and are hot extruded on a plastic extruder to form the plastic protective sleeve with the vapor phase corrosion inhibition function;

step 2: and (5) transporting the single stranded steel wires and the protective sleeves to an engineering site. The single-bundle steel strand can be a plain steel strand, a galvanized steel strand, an epoxy coating steel strand, a PE sheath steel strand and a non-bonded gas phase corrosion inhibition steel strand;

and step 3: after a plurality of bundles of steel stranded wires pass through a plurality of protective sleeve pipes, the steel stranded wires at the end part of the gas-phase anti-corrosion cable body pass through the embedded pipe and the sealing cylinder sealing device to enter the sealing cylinder and then pass through the anchor plate, and after the completion, the upper end of the embedded pipe is hooped into a strand by a cable hoop;

and 4, step 4: adding a vapor phase inhibitor into the sealed cylinder;

and 5: then, a nut is installed on the sealing cylinder and is pre-tightened, and then the anchor plate and the clamping piece are installed;

step 6: after anchoring and tensioning are finished, releasing a gas phase corrosion inhibitor to the embedded pipes at the two ends;

and 7: respectively installing a pre-buried conduit sealing device, a shock absorber and a waterproof cover;

and 8: applying a vapor phase corrosion inhibitor between the protective sleeve and the vapor phase corrosion prevention cable body;

and step 9: splicing and welding the protective sleeve into a whole;

step 10: after the completion, the cable body anchorage device, the pre-embedded guide pipe and the sealing device form a closed space, the steel strand and the plastic sheath pipe form a closed space, and the vapor phase corrosion inhibitor is filled in each position in the closed space through molecular motion, so that the cable has long-acting corrosion resistance in all directions.

The invention has the beneficial effects that: 1. the invention has clear anticorrosion mechanism, mature and reliable technology, simple and convenient measure, and convenient replacement and implementation; 2. the invention can naturally compensate the steel wire damage or the steel wire coating damage in the cable making process and the corrosion prevention caused by the wet air in the cable body; 3. the invention can improve the inevitable corrosion condition due to the structure characteristics, and can achieve full-section omnibearing corrosion prevention; 4. the invention prolongs the corrosion resistance durability of the stay cable body through gas phase corrosion inhibition and corrosion prevention on the basis of the existing stay cable body corrosion prevention technology; 5. the invention has low input cost and high social and economic benefits.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A gas phase corrosion resistant cable body (100) characterized by: the steel wire rope comprises steel wires (1), a rope wrapping belt (4) and a plastic sheath (5), wherein the steel wires (1) are twisted into steel strands (2), a plurality of steel strands (2) are arranged and combined in a certain arrangement to form a rope strand (3), the outer surface of the rope strand (3) is wound on the rope wrapping belt (4), the plastic sheath (5) is sleeved on the outer surface of the rope wrapping belt (4), the steel strands (2) at two ends are exposed outside, and a gas phase corrosion inhibition material is placed in the plastic sheath (5).

2. The gas phase corrosion protection cable according to claim 1, wherein: the vapor-phase corrosion inhibition material is a vapor-phase antirust agent, and the vapor-phase antirust agent is coated on the outer surface of the cable strand (3); the vapor phase corrosion inhibition material also comprises a vapor phase antirust belt (6), the vapor phase antirust belt (6) is wound on the outer surface of the cable strand (3), and the vapor phase antirust agent is positioned between the outer surface of the cable strand (3) and the inner surface of the vapor phase antirust belt (6).

3. The gas phase corrosion protection cable according to claim 1, wherein: the vapor-phase corrosion inhibition material is a vapor-phase antirust belt (6), the vapor-phase antirust belt (6) is wound on the outer surface of the cable strand (3), and the wrapping belt (4) wraps the vapor-phase antirust belt (6); or the gas-phase antirust belt (6) and the belt (4) are integrally formed.

4. The gas phase corrosion protection cable according to claim 1, wherein: the gas-phase corrosion-resistant cable body further comprises a protecting sleeve (7), the gas-phase corrosion-inhibiting material comprises gas-phase rust-resistant lubricating grease, the gas-phase rust-resistant lubricating grease is coated on the outer surface of the steel stranded wire (2), the protecting sleeve (7) wraps the steel stranded wire (2), and a plurality of steel stranded wires (2) with the protecting sleeve (7) are braided in a certain arrangement combination to form a cable strand (3); the vapor phase corrosion inhibition material also comprises a vapor phase antirust agent, and the vapor phase antirust agent is coated on the outer surface of the steel wire (1); and doping a gas-phase corrosion inhibitor into the protective sleeve (7) to form a gas-phase corrosion inhibition protective sleeve (71).

5. The gas phase corrosion protection gasket according to any one of claims 1 to 4, wherein: the plastic sheath (5) comprises an inner layer sheath (51) and an outer layer sheath (52) wrapping the inner layer sheath (51), and the inner layer sheath (51) wraps the belting (4); the inner layer jacket (51) is doped with a vapor phase corrosion inhibitor to form an inner layer vapor phase corrosion inhibiting jacket (511) and/or the outer layer jacket (52) is doped with a vapor phase corrosion inhibitor to form an outer layer vapor phase corrosion inhibiting jacket (521).

6. The utility model provides a gaseous phase anticorrosion steel strand wires cable which characterized in that: the gas phase corrosion-resistant cable comprises the gas phase corrosion-resistant cable body (100) as claimed in any one of claims 1 to 5, an end plate (13), an anchoring sleeve (14) and a first sealing cylinder (15), wherein the first sealing cylinder (15) and the anchoring sleeve (14) are respectively and sequentially mounted at two ends of the gas phase corrosion-resistant cable body (100), the end plate (13) is mounted at the top end of the anchoring sleeve (14), the end plate (13), the anchoring sleeve (14), the first sealing cylinder (15) and the end part of the gas phase corrosion-resistant cable body (100) form a closed space, and a gas phase corrosion inhibitor is filled in the closed space; the end parts of two ends of the gas-phase anticorrosion cable body (100) are provided with the exposed steel strand wires (2), the steel strand wires (2) sequentially penetrate through the first sealing cylinder (15) and the anchoring sleeve (14), and the steel strand wires (2) are coated with a gas-phase corrosion inhibitor.

7. The vapor corrosion-resistant steel strand inhaul cable according to claim 6, wherein: the gas-phase corrosion-resistant steel strand inhaul cable further comprises a nut (16), a spherical base plate (17), a first anchor base plate (18), a first embedded pipe (19), a protective cover (21), a first shock absorber (22) and a first waterproof cover (23), wherein the first embedded pipe (19) is installed in concrete, the end part of the gas-phase corrosion-resistant cable body (100) penetrates into the first embedded pipe (19) and the first anchor base plate (18) in sequence and then is installed in the spherical base plate (17) and the nut (16), the protective cover (21) is installed at the end part of the gas-phase corrosion-resistant cable body (100), and a gas-phase corrosion inhibitor is placed in a closed space formed by the protective cover (21) and the end part of the gas-phase corrosion-resistant cable body (100); the first shock absorber (22) is arranged in a gap between the embedded pipe (19) and the gas-phase corrosion-resistant cable body (100), and the gas-phase corrosion inhibitor is arranged in a closed space formed by the first embedded pipe (19), the gas-phase corrosion-resistant cable body (100) and the first shock absorber (22); the first waterproof cover (23) is installed between the first embedded pipe (19) and the gas-phase corrosion prevention cable body (100).

8. A clamping piece type gas phase corrosion inhibition extrusion inhaul cable is characterized in that: the gas phase corrosion-resistant cable body (100) comprises the gas phase corrosion-resistant cable body (100) of any one of claims 1 to 5, a second embedded pipe (23), an anchor plate (24), a clamping piece (25), a cable hoop (26), a second shock absorber (27), a second anchor backing plate (28), a sealing device and an anchor head protecting cover (36), wherein the second embedded pipe (23) is installed in concrete, the steel strand (2) is exposed at the end part of the gas phase corrosion-resistant cable body (100), the gas phase corrosion-resistant cable body (100) is installed in the second embedded pipe (23), and the end part of the gas phase corrosion-resistant cable body (100) extends out of the second embedded pipe (23); the steel strand (2) at the end part of the gas-phase anti-corrosion cable body (100) sequentially penetrates into the second embedded pipe (23), the second anchor backing plate (28) and the anchor plate (24), and the clamping piece (25) is arranged between the steel strand (2) and the anchor plate (24); the sealing device is arranged at the front end part of the gas-phase anticorrosion cable body (100) positioned in the second embedded pipe (23); the second shock absorber (27) and the cable hoop (26) are respectively arranged between the second embedded pipe (23) and the gas-phase corrosion-resistant cable body (100), and a gap between the second embedded pipe (23) and the gas-phase corrosion-resistant cable body (100) is filled with the gas-phase corrosion inhibitor; the end part of the gas-phase corrosion-resistant cable body (100) is provided with the anchor head protective cover (36), and the airtight space formed by the anchor head protective cover (36) and the end part of the gas-phase corrosion-resistant cable body (100) is filled with the gas-phase corrosion inhibitor.

9. The clip-type vapor phase corrosion inhibition extrusion cable according to claim 8, characterized in that: the clip type gas phase corrosion inhibition extrusion inhaul cable also comprises a second waterproof cover (33), the second waterproof cover (33) is arranged between the second embedded pipe (23) and the gas phase corrosion prevention cable body (100), the second waterproof cover (33), the cable hoop (26) and the gas phase corrosion prevention cable body (100) form a sealed space, and the sealed space is filled with the gas phase corrosion inhibitor; the sealing device comprises a second sealing cylinder (34) and a sealing cylinder sealing device (35), and the bottom of the second sealing cylinder (34) is installed on the sealing cylinder sealing device (35); the clip type gas phase corrosion inhibition extrusion inhaul cable also comprises an anti-loosening device (37), wherein the anti-loosening device (37) is used for fixing the fixed steel strand (2) exposed outside on the anchor plate (24).

10. A construction method based on non-finished cable bodies is characterized by comprising the following steps:

step 1: the plastic master batches are taken as raw materials and are hot-extruded into the plastic protective sleeve on a plastic extruder, or the plastic master batches with the vapor phase corrosion inhibitor doped in different proportions are taken as raw materials and are hot-extruded into the plastic protective sleeve with the vapor phase corrosion inhibition function on the plastic extruder;

step 2: transporting a plurality of single steel strands and a plurality of jacket pipes to an engineering site;

and step 3: after a plurality of bundles of steel stranded wires pass through a plurality of protective sleeve pipes, the steel stranded wires at the end part of the gas-phase anti-corrosion cable body pass through the embedded pipe and the sealing cylinder sealing device to enter the sealing cylinder and then pass through the anchor plate, and after the completion, the upper end of the embedded pipe is hooped into a strand by a cable hoop;

and 4, step 4: adding a vapor phase inhibitor into the sealed cylinder;

and 5: then, a nut is installed on the sealing cylinder and is pre-tightened, and then the anchor plate and the clamping piece are installed;

step 6: after anchoring and tensioning are finished, releasing a gas phase corrosion inhibitor to the embedded pipes at the two ends;

and 7: respectively installing a pre-buried conduit sealing device, a shock absorber and a waterproof cover;

and 8: applying a vapor phase corrosion inhibitor between the protective sleeve and the vapor phase corrosion prevention cable body;

and step 9: splicing and welding the protective sleeve into a whole;

step 10: after the completion, the cable body anchorage device, the pre-embedded guide pipe and the sealing device form a closed space, the steel strand and the plastic sheath pipe form a closed space, and the vapor phase corrosion inhibitor is filled in each position in the closed space through molecular motion, so that the cable has long-acting corrosion resistance in all directions.

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